At the beginning of your upkeep, put a muster counter on Assemble the Legion. Then create a 1/1 red and white Soldier creature token with haste for each muster counter on Assemble the Legion.
{2}{W}{W}
Battle Screech
Sorcery
Create two 1/1 white Bird creature tokens with flying.
Flashback--Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{U}
Brainstorm
Instant
Draw three cards, then put two cards from your hand on top of your library in any order.
{3}{W}
Captain's Call
Sorcery
Create three 1/1 white Soldier creature tokens.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{3}
Darksteel Ingot
Artifact
Indestructible
{T}: Add one mana of any color.
{1}{W/U}{ // }{2}{W}{U}
Depose // Deploy
Instant // Instant
Tap target creature.
Draw a card.
Create two 1/1 colorless Thopter artifact creature tokens with flying, then you gain 1 life for each creature you control.
{3}{W}{W}
Dictate of Heliod
Enchantment
Flash
Creatures you control get +2/+2.
{3}{U}{U}
Docent of Perfection
Creature - Insect Horror
Flying
Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token. Then if you control three or more Wizards, transform Docent of Perfection.
5 /
4
--
Final Iteration
Creature - Eldrazi Insect
Flying
Wizards you control get +2/+1 and have flying.
Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token.
5 /
4
{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.
{1}{R}
Dragon Fodder
Sorcery
Create two 1/1 red Goblin creature tokens.
--
Dread Statuary
Land
{T}: Add {C}.
{4}: Dread Statuary becomes a 4/2 Golem artifact creature until end of turn. It's still a land.
{2}{U}
Dream Cache
Sorcery
Draw three cards, then put two cards from your hand both on top of your library or both on the bottom of your library.
{2}{U}{R}{W}
Elsha of the Infinite
Legendary Creature - Djinn Monk
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
You may look at the top card of your library any time.
You may cast noncreature spells from the top of your library. If you cast a spell this way, you may cast it as though it had flash.
3 /
3
{3}{R}
Empty the Warrens
Sorcery
Create two 1/1 red Goblin creature tokens.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)
{3}{W}
Eyes in the Skies
Instant
Create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.)
{1}{R}
Firebrand Archer
Creature - Human Archer
Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent.
2 /
1
{2}{W}{W}
Force of Virtue
Enchantment
If it's not your turn, you may exile a white card from your hand rather than pay this spell's mana cost.
Flash
Creatures you control get +1/+1.
{1}{W}
Gather the Townsfolk
Sorcery
Create two 1/1 white Human creature tokens.
Fateful hour -- If you have 5 or less life, create five of those tokens instead.
{U}{R}
Goblin Electromancer
Creature - Goblin Wizard
Instant and sorcery spells you cast cost {1} less to cast.
2 /
2
{3}{R}
Goblin War Party
Sorcery
Choose one --
• Create three 1/1 red Goblin creature tokens.
• Creatures you control get +1/+1 and gain haste until end of turn.
Entwine {2}{R} (Choose both if you pay the entwine cost.)
{2}{R}
Goblinslide
Enchantment
Whenever you cast a noncreature spell, you may pay {1}. If you do, create a 1/1 red Goblin creature token with haste.
{2}{U}{U}
God-Eternal Kefnet
Legendary Creature - Zombie God
Flying
You may reveal the first card you draw each turn as you draw it. Whenever you reveal an instant or sorcery card this way, copy that card and you may cast the copy. That copy costs {2} less to cast.
When God-Eternal Kefnet dies or is put into exile from the battlefield, you may put it into its owner's library third from the top.
4 /
5
{2}{R}
Guttersnipe
Creature - Goblin Shaman
Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.
2 /
2
{2}{R}{W}
Heroic Reinforcements
Sorcery
Create two 1/1 white Soldier creature tokens. Until end of turn, creatures you control get +1/+1 and gain haste. (They can attack and {T} this turn.)
{1}{R}{R}
Hordeling Outburst
Sorcery
Create three 1/1 red Goblin creature tokens.
{4}{W}{W}{W}
Hour of Reckoning
Sorcery
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Destroy all nontoken creatures.
{3}{W}{W}
Increasing Devotion
Sorcery
Create five 1/1 white Human creature tokens. If this spell was cast from a graveyard, create ten of those tokens instead.
Flashback {7}{W}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{U}
Index
Sorcery
Look at the top five cards of your library, then put them back in any order.
{1}{W}
Intangible Virtue
Enchantment
Creature tokens you control get +1/+1 and have vigilance.
--
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}.)
--
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}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{3}{U}
Jace's Sanctum
Enchantment
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
{U}{R}{W}
Jeskai Ascendancy
Enchantment
Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn. Untap those creatures.
Whenever you cast a noncreature spell, you may draw a card. If you do, discard a card.
{1}{R}
Krenko's Command
Sorcery
Create two 1/1 red Goblin creature tokens.
{1}{U}{R}{W}
Kykar, Wind's Fury
Legendary Creature - Bird Wizard
Flying
Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.
Sacrifice a Spirit: Add {R}.
3 /
3
{2}
Lightning Greaves
Artifact - Equipment
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}
{4}{U}{R}
Melek, Izzet Paragon
Legendary Creature - Weird Wizard
Play with the top card of your library revealed.
You may cast instant and sorcery spells from the top of your library.
Whenever you cast an instant or sorcery spell from your library, copy it. You may choose new targets for the copy.
2 /
4
{2}{W}
Midnight Haunting
Instant
Create two 1/1 white Spirit creature tokens with flying.
{3}{W}{U}
Migratory Route
Sorcery
Create four 1/1 white Bird creature tokens with flying.
Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{1}{R}
Mizzium Mortars
Sorcery
Mizzium Mortars deals 4 damage to target creature you don't control.
Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{3}{U}
Murmuring Mystic
Creature - Human Wizard
Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.
1 /
5
--
Needle Spires
Land
Needle Spires enters the battlefield tapped.
{T}: Add {R} or {W}.
{2}{R}{W}: Needle Spires becomes a 2/1 red and white Elemental creature with double strike until end of turn. It's still a land.
{4}{W}{W}
Nomads' Assembly
Sorcery
Create a 1/1 white Kor Soldier creature token for each creature you control.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)
{6}{W}{W}
Parhelion II
Legendary Artifact - Vehicle
Flying, first strike, vigilance
Whenever Parhelion II attacks, create two 4/4 white Angel creature tokens with flying and vigilance that are attacking.
Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)
5 /
5
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
{U}
Ponder
Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
{3}{U}
Precognition Field
Enchantment
You may look at the top card of your library any time.
You may cast instant and sorcery spells from the top of your library.
{3}: Exile the top card of your library.
{3}
Proteus Staff
Artifact
{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield and the rest on the bottom of their library in any order. Activate only as a sorcery.
{1}{W}
Raise the Alarm
Instant
Create two 1/1 white Soldier creature tokens.
{2}{W}
Rally for the Throne
Instant
Create two 1/1 white Human creature tokens.
Adamant -- If at least three white mana was spent to cast this spell, you gain 1 life for each creature you control.
{W}
Recruit the Worthy
Instant
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Create a 1/1 white Soldier creature token.
{1}{W}
Revoke Existence
Sorcery
Exile target artifact or enchantment.
{5}{U}
Rise from the Tides
Sorcery
Create a tapped 2/2 black Zombie creature token for each instant and sorcery card in your graveyard.
{2}{W}
Rootborn Defenses
Instant
Populate. Creatures you control gain indestructible until end of turn. (To populate, create a token that's a copy of a creature token you control.)
{1}{U/R}{U/R}
Saheeli, Sublime Artificer
Legendary Planeswalker - Saheeli
Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.
-2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.
L:
5
{2}
Scroll of the Masters
Artifact
Whenever you cast a noncreature spell, put a lore counter on Scroll of the Masters.
{3}, {T}: Target creature you control gets +1/+1 until end of turn for each lore counter on Scroll of the Masters.
{1}{W}
Servo Exhibition
Sorcery
Create two 1/1 colorless Servo artifact creature tokens.
{1}
Skullclamp
Artifact - Equipment
Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip {1}
{3}{U}
Skywise Teachings
Enchantment
Whenever you cast a noncreature spell, you may pay {1}{U}. If you do, create a 2/2 blue Djinn Monk creature token with flying.
{3}{W}
Spectral Reserves
Sorcery
Create two 1/1 white Spirit creature tokens with flying. You gain 2 life.
{W}
Spiritual Visit
Instant - Arcane
Create a 1/1 colorless Spirit creature token.
Splice onto Arcane {W} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)
{2}{W}{W}
Sram's Expertise
Sorcery
Create three 1/1 colorless Servo artifact creature tokens.
You may cast a spell with mana value 3 or less from your hand without paying its mana cost.
{8}{W}{W}
Storm Herd
Sorcery
Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.
{4}{U}{U}
Sublime Epiphany
Instant
Choose one or more --
• Counter target spell.
• Counter target activated or triggered ability.
• Return target nonland permanent to its owner's hand.
• Create a token that's a copy of target creature you control.
• Target player draws a card.
{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}
{2}{U}{U}
Talrand's Invocation
Sorcery
Create two 2/2 blue Drake creature tokens with flying.
{2}{U}{U}
Talrand, Sky Summoner
Legendary Creature - Merfolk Wizard
Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.
2 /
2
{U}{R}
Teleportal
Sorcery
Target creature you control gets +1/+0 until end of turn and can't be blocked this turn.
Overload {3}{U}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")
{4}{W}{W}
Triplicate Spirits
Sorcery
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Create three 1/1 white Spirit creature tokens with flying. (They can't be blocked except by creatures with flying or reach.)
{1}{R}
Young Pyromancer
Creature - Human Shaman
Whenever you cast an instant or sorcery spell, create a 1/1 red Elemental creature token.