Whenever you cast your first instant or sorcery spell each turn, exile an instant or sorcery card at random from your graveyard. Then copy each card exiled with Arcane Bombardment. You may cast any number of the copies without paying their mana costs.
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{2}{U}{U}
Archmage Emeritus
Creature - Human Wizard
Magecraft -- Whenever you cast or copy an instant or sorcery spell, draw a card.
2 /
2
{2}{G}
Beast Within
Instant
Destroy target permanent. Its controller creates a 3/3 green Beast creature token.
{3}{R}
Big Score
Instant
As an additional cost to cast this spell, discard a card.
Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{G}
Blossoming Defense
Instant
Target creature you control gets +2/+2 and gains hexproof until end of turn.
--
Breeding Pool
Land - Forest Island
({T}: Add {G} or {U}.)
As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{3}{R}{R}
Chandra's Ignition
Sorcery
Target creature you control deals damage equal to its power to each other creature and each opponent.
{2}{R}
Chaos Warp
Instant
The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
--
Cinder Glade
Land - Mountain Forest
({T}: Add {R} or {G}.)
Cinder Glade enters the battlefield tapped unless you control two or more basic lands.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{G}
Crop Rotation
Instant
As an additional cost to cast this spell, sacrifice a land.
Search your library for a land card, put that card onto the battlefield, then shuffle.
{1}{U}{U}{U}
Cryptic Command
Instant
Choose two --
• Counter target spell.
• Return target permanent to its owner's hand.
• Tap all creatures your opponents control.
• Draw a card.
{1}{U}
Cyclonic Rift
Instant
Return target nonland permanent you don't control to its owner's hand.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
{2}{R}
Deflecting Swat
Instant
If you control a commander, you may cast this spell without paying its mana cost.
You may choose new targets for target spell or ability.
{2}{U}
Discover the Impossible
Instant
Look at the top five cards of your library. Exile one of them face down and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost if it's an instant spell with mana value 2 or less. If you don't, put that card into your hand.
{3}{R}{R}
Double Vision
Enchantment
Whenever you cast your first instant or sorcery spell each turn, copy that spell. You may choose new targets for the copy.
{X}{R}{R}
Electrodominance
Instant
Electrodominance deals X damage to any target. You may cast a spell with mana value X or less from your hand without paying its mana cost.
{U}
Errant, Street Artist
Legendary Creature - Human Rogue
Flash
Defender, haste
{1}{U}, {T}: Copy target spell you control that wasn't cast. You may choose new targets for the copy.
0 /
3
{U/R}{U/R}{ // }{X}{U}{U}{R}{R}
Expansion // Explosion
Instant // Instant
Copy target instant or sorcery spell with mana value 4 or less. You may choose new targets for the copy.
Explosion deals X damage to any target. Target player draws X cards.
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
{2}{U}
Frantic Search
Instant
Draw two cards, then discard two cards. Untap up to three lands.
{G}{U}
Growth Spiral
Instant
Draw a card. You may put a land card from your hand onto the battlefield.
{2}{G}
Harrow
Instant
As an additional cost to cast this spell, sacrifice a land.
Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.
--
Hinterland Harbor
Land
Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.
--
Holdout Settlement
Land
{T}: Add {C}. ({C} represents colorless mana.)
{T}, Tap an untapped creature you control: Add one mana of any color.
{3}
Honor-Worn Shaku
Artifact
{T}: Add {C}.
Tap an untapped legendary permanent you control: Untap Honor-Worn Shaku.
{1}{U}
Impulse
Instant
Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{2}
Isochron Scepter
Artifact
Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.
{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.
--
Ketria Triome
Land - Forest Island Mountain
({T}: Add {G}, {U}, or {R}.)
Ketria Triome enters the battlefield tapped.
Cycling {3} ({3}, Discard this card: Draw a card.)
{3}{U}{U}
Lier, Disciple of the Drowned
Legendary Creature - Human Wizard
Spells can't be countered.
Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost.
3 /
4
{U}{U}
Mana Drain
Instant
Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
{1}{R/G}
Manamorphose
Instant
Add two mana in any combination of colors.
Draw a card.
--
Misty Rainforest
Land
{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{3}{U}{U}
Mystic Confluence
Instant
Choose three. You may choose the same mode more than once.
• Counter target spell unless its controller pays {3}.
• Return target creature to its owner's hand.
• Draw a card.
--
Mystic Sanctuary
Land - Island
({T}: Add {U}.)
Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands.
When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.
{U}{U}
Narset's Reversal
Instant
Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy.
{G}
Nature's Claim
Instant
Destroy target artifact or enchantment. Its controller gains 4 life.
{1}{G}
Nature's Lore
Sorcery
Search your library for a Forest card, put that card onto the battlefield, then shuffle.
{G/P}
Noxious Revival
Instant
({G/P} can be paid with either {G} or 2 life.)
Put target card from a graveyard on top of its owner's library.
{U}
Opt
Instant
Scry 1.
Draw a card.
{4}
Primal Amulet
Artifact
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.
--
Primal Wellspring
Land
(Transforms from Primal Amulet.)
{T}: Add one mana of any color. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.
{1}{G}{U}
Quandrix Command
Instant
Choose two --
• Return target creature or planeswalker to its owner's hand.
• Counter target artifact or enchantment spell.
• Put two +1/+1 counters on target creature.
• Target player shuffles up to three target cards from their graveyard into their library.
{2}{U}{R}
Ral, Storm Conduit
Legendary Planeswalker - Ral
Whenever you cast or copy an instant or sorcery spell, Ral, Storm Conduit deals 1 damage to target opponent or planeswalker.
+2: Scry 1.
-2: When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
L:
4
{2}{G}{U}
Rashmi, Eternities Crafter
Legendary Creature - Elf Druid
Whenever you cast your first spell each turn, reveal the top card of your library. You may cast it without paying its mana cost if it's a spell with lesser mana value. If you don't cast it, put it into your hand.
2 /
3
{1}{U}
Reality Shift
Instant
Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)
{1}{G}
Reap
Instant
Return up to X target cards from your graveyard to your hand, where X is the number of black permanents target opponent controls as you cast this spell.
{G}
Reclaim
Instant
Put target card from your graveyard on top of your library.
{3}{R}{ // }{2}{U}
Refuse // Cooperate
Instant // Instant
Refuse deals damage to target spell's controller equal to that spell's mana value.
Aftermath (Cast this spell only from your graveyard. Then exile it.)
Copy target instant or sorcery spell. You may choose new targets for the copy.
--
Rejuvenating Springs
Land
Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents.
{T}: Add {G} or {U}.
{4}{G}
Return of the Wildspeaker
Instant
Choose one --
• Draw cards equal to the greatest power among non-Human creatures you control.
• Non-Human creatures you control get +3/+3 until end of turn.
{R}{R}
Reverberate
Instant
Copy target instant or sorcery spell. You may choose new targets for the copy.
{2}{U}
Rhystic Study
Enchantment
Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.
--
Rootbound Crag
Land
Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.
{T}: Add {R} or {G}.
--
Scalding Tarn
Land
{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.
--
Scavenger Grounds
Land - Desert
{T}: Add {C}.
{2}, {T}, Sacrifice a Desert: Exile all graveyards.
{3}{G}{G}
Seedborn Muse
Creature - Spirit
Untap all permanents you control during each other player's untap step.
2 /
4
{U}
Shadow Rift
Instant
Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)
Draw a card.
{2}{U}
Silundi Vision
Instant
Look at the top six cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
--
Silundi Isle
Land
Silundi Isle enters the battlefield tapped.
{T}: Add {U}.
{1}{U}
Snap
Instant
Return target creature to its owner's hand. Untap up to two lands.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}{R}
Soul's Fire
Instant
Target creature you control deals damage equal to its power to any target.
--
Spire Garden
Land
Spire Garden enters the battlefield tapped unless you have two or more opponents.
{T}: Add {R} or {G}.
{1}
Springleaf Drum
Artifact
{T}, Tap an untapped creature you control: Add one mana of any color.
--
Steam Vents
Land - Island Mountain
({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Stomping Ground
Land - Mountain Forest
({T}: Add {R} or {G}.)
As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{3}{R}
Storm-Kiln Artist
Creature - Dwarf Shaman
Storm-Kiln Artist gets +1/+0 for each artifact you control.
Magecraft -- Whenever you cast or copy an instant or sorcery spell, create a Treasure token.
2 /
2
--
Sulfur Falls
Land
Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain.
{T}: Add {U} or {R}.
{2}{U}
Supreme Will
Instant
Choose one --
• Counter target spell unless its controller pays {3}.
• Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
--
Survivors' Encampment
Land - Desert
{T}: Add {C}.
{T}, Tap an untapped creature you control: Add one mana of any color.
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
--
Taiga
Land - Mountain Forest
({T}: Add {R} or {G}.)
{2}
Talisman of Creativity
Artifact
{T}: Add {C}.
{T}: Add {U} or {R}. Talisman of Creativity deals 1 damage to you.
{2}
Talisman of Curiosity
Artifact
{T}: Add {C}.
{T}: Add {G} or {U}. Talisman of Curiosity deals 1 damage to you.
{1}{R}
Temur Battle Rage
Instant
Target creature gains double strike until end of turn.
Ferocious -- That creature also gains trample until end of turn if you control a creature with power 4 or greater.
{1}{G}
Three Visits
Sorcery
Search your library for a Forest card, put it onto the battlefield, then shuffle.
{1}{R}
Thrill of Possibility
Instant
As an additional cost to cast this spell, discard a card.
Draw two cards.
--
Training Center
Land
Training Center enters the battlefield tapped unless you have two or more opponents.
{T}: Add {U} or {R}.
--
Tropical Island
Land - Forest Island
({T}: Add {G} or {U}.)
{U}{U}
Twincast
Instant
Copy target instant or sorcery spell. You may choose new targets for the copy.
{3}
Twinning Staff
Artifact
If you would copy a spell one or more times, instead copy it that many times plus an additional time. You may choose new targets for the additional copy.
{7}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.
{2}{R}{R}
Unexpected Windfall
Instant
As an additional cost to cast this spell, discard a card.
Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{1}{R}
Unleash Fury
Instant
Double the power of target creature until end of turn.
{G}
Veil of Summer
Instant
Draw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and permanents you control gain hexproof from blue and from black until end of turn. (You and they can't be the targets of blue or black spells or abilities your opponents control.)
{1}{U}{R}
Veyran, Voice of Duality
Legendary Creature - Efreet Wizard
Magecraft -- Whenever you cast or copy an instant or sorcery spell, Veyran, Voice of Duality gets +1/+1 until end of turn.
If you casting or copying an instant or sorcery spell causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
2 /
2
{G}
Vines of Vastwood
Instant
Kicker {G} (You may pay an additional {G} as you cast this spell.)
Target creature can't be the target of spells or abilities your opponents control this turn. If this spell was kicked, that creature gets +4/+4 until end of turn.
--
Volcanic Island
Land - Island Mountain
({T}: Add {U} or {R}.)
{3}{G}
Wilderness Reclamation
Enchantment
At the beginning of your end step, untap all lands you control.
{2}{G}
Wildsize
Instant
Target creature gets +2/+2 and gains trample until end of turn.
Draw a card.
--
Wooded Foothills
Land
{T}, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.
{1}{G}{U}{R}
Kalamax, the Stormsire
Legendary Creature - Elemental Dinosaur
Whenever you cast your first instant spell each turn, if Kalamax, the Stormsire is tapped, copy that spell. You may choose new targets for the copy.
Whenever you copy an instant spell, put a +1/+1 counter on Kalamax.
4 /
4
--
Beast
Token Creature - Beast
Green
3 /
3
--
Treasure
Token Artifact - Treasure
Colorless
{T}, Sacrifice this artifact: Add one mana of any color.