Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.
{U}
Ancestral Recall
Instant
Target player draws three cards.
{3}{W}
Armageddon
Sorcery
Destroy all lands.
{1}{W}
Balance
Sorcery
Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.
--
Bazaar of Baghdad
Land
{T}: Draw two cards, then discard three cards.
{0}
Black Lotus
Artifact
{T}, Sacrifice Black Lotus: Add three mana of any one color.
{3}{B}{G}
Cadaverous Bloom
Enchantment
Exile a card from your hand: Add {B}{B} or {G}{G}.
{R}
Chain Lightning
Sorcery
Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.
{G}{G}
Channel
Sorcery
Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.
{3}{B}{B}
Contagion
Instant
You may pay 1 life and exile a black card from your hand rather than pay this spell's mana cost.
Distribute two -2/-1 counters among one or two target creatures.
{U}{U}
Counterspell
Instant
Counter target spell.
{W}{U}
Crystalline Sliver
Creature - Sliver
All Slivers have shroud. (They can't be the targets of spells or abilities.)
2 /
2
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
{1}{B}
Demonic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
{X}{R}
Fireball
Sorcery
This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.
{4}{R}{R}
Fireblast
Instant
You may sacrifice two Mountains rather than pay this spell's mana cost.
Fireblast deals 4 damage to any target.
--
Gaea's Cradle
Legendary Land
{T}: Add {G} for each creature you control.
{1}{R}
Goblin Bombardment
Enchantment
Sacrifice a creature: Goblin Bombardment deals 1 damage to any target.
{B}{B}
Hymn to Tourach
Sorcery
Target player discards two cards at random.
{R}
Kird Ape
Creature - Ape
Kird Ape gets +1/+2 as long as you control a Forest.
1 /
1
{G}{G}
Lifeforce
Enchantment
{G}{G}: Counter target black spell.
{R}
Lightning Bolt
Instant
Lightning Bolt deals 3 damage to any target.
{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}{U}
Memory Lapse
Instant
Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.
{X}{B}
Mind Twist
Sorcery
Target player discards X cards at random.
--
Mishra's Factory
Land
{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.
{W}
Mother of Runes
Creature - Human Cleric
{T}: Target creature you control gains protection from the color of your choice until end of turn.
1 /
1
{0}
Mox Diamond
Artifact
If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add one mana of any color.
{0}
Mox Emerald
Artifact
{T}: Add {G}.
{0}
Mox Jet
Artifact
{T}: Add {B}.
{0}
Mox Pearl
Artifact
{T}: Add {W}.
{0}
Mox Ruby
Artifact
{T}: Add {R}.
{0}
Mox Sapphire
Artifact
{T}: Add {U}.
{B}{B}{B}
Necropotence
Enchantment
Skip your draw step.
Whenever you discard a card, exile that card from your graveyard.
Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.
{1}{R}
Orcish Settlers
Creature - Orc
{X}{X}{R}, {T}, Sacrifice Orcish Settlers: Destroy X target lands.
1 /
1
{X}{U}
Power Sink
Instant
Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.
{4}{R}{R}
Pyrokinesis
Instant
You may exile a red card from your hand rather than pay this spell's mana cost.
Pyrokinesis deals 4 damage divided as you choose among any number of target creatures.
{G}
Rancor
Enchantment - Aura
Enchant creature
Enchanted creature gets +2/+0 and has trample.
When Rancor is put into a graveyard from the battlefield, return Rancor to its owner's hand.
{R}
Red Elemental Blast
Instant
Choose one --
• Counter target blue spell.
• Destroy target blue permanent.
{2}{R}{R}
Shatterstorm
Sorcery
Destroy all artifacts. They can't be regenerated.
{B}{B}
Sinkhole
Sorcery
Destroy target land.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
--
Strip Mine
Land
{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.
{1}{G}
Survival of the Fittest
Enchantment
{G}, Discard a creature card: Search your library for a creature card, reveal that card, put it into your hand, then shuffle.
{2}
Time Vault
Artifact
Time Vault enters the battlefield tapped.
Time Vault doesn't untap during your untap step.
If you would begin your turn while Time Vault is tapped, you may skip that turn instead. If you do, untap Time Vault.
{T}: Take an extra turn after this one.
{1}{U}
Time Walk
Sorcery
Take an extra turn after this one.
--
Tolarian Academy
Legendary Land
{T}: Add {U} for each artifact you control.
{3}{U}{U}
Treachery
Enchantment - Aura
Enchant creature
When Treachery enters the battlefield, untap up to five lands.
You control enchanted creature.
{B}
Vampiric Tutor
Instant
Search your library for a card, then shuffle and put that card on top. You lose 2 life.