Modern Horizons 3

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, you may cast that card without paying its mana cost if ...

Colorless spells you cast with mana value 7 or greater cost {1} less to cast. Other colorless creatures you control get +1/+1.

Consuming Corruption deals X damage to target creature or planeswalker and you gain X life, where X is the number of Swamps you control.

Draw four cards, then put two cards from your hand on top of your library in any order.

You may have Copycrook enter the battlefield as a copy of any creature on the battlefield, except it has "Whenever this creature attacks, it conniv...

When Muster the Departed enters the battlefield, create a 1/1 white Spirit creature token with flying. Morbid — At the beginning of your end step, ...

{T}: Add {C}. {T}, Sacrifice Perilous Landscape: Search your library for a basic Island, Mountain, or Plains card, put it onto the battlefield tapp...

{T}: Add {C}. {T}, Sacrifice Contaminated Landscape: Search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tap...

Emerge from artifact {5}{B}{B} (You may cast this spell by sacrificing an artifact and paying the emerge cost reduced by that artifact's mana value...

When Hexgold Slith enters the battlefield, you get {E}{E} (two energy counters). Whenever Hexgold Slith attacks, you may pay {E}{E}. If you do, it ...

When Inspired Inventor enters the battlefield, choose one — • You get {E}{E}{E} (three energy counters). • Put a +1/+1 counter on target creature. ...

Devoid (This card has no color.) When you cast this spell, exile up to one target noncreature, nonland permanent an opponent controls with mana val...

Consuming Corruption deals X damage to target creature or planeswalker and you gain X life, where X is the number of Swamps you control.

Haste Whenever Laelia, the Blade Reforged attacks, exile the top card of your library. You may play that card this turn. Whenever one or more cards...

Revolt — As long as a permanent you controlled left the battlefield this turn, if a source you control would deal noncombat damage to an opponent o...

Blue spells you cast cost {1} less to cast.

Return target spell or nonland permanent an opponent controls to its owner's hand.

Return an Elf you control to its owner's hand: Untap target creature. Activate only once each turn.

Tap all creatures target player controls. You may pay X {E}, then choose up to X creatures tapped this way. Put a stun counter on each of them. (If...

Return target permanent card with mana value 3 or less from your graveyard to the battlefield. If this spell was cast from a graveyard, you may cop...

Enchant creature Enchanted creature gets +1/+1 for each creature and/or enchantment you control.

Devoid (This card has no color.) When you cast this spell, if {C} was spent to cast it, create two 0/1 colorless Eldrazi Spawn creature tokens with...

Draw two cards. Then discard a card at random unless you pay {E}{E} (two energy counters).

Look at the top four cards of your library. You may put a land card from among them onto the battlefield tapped. If you don't, put a card from amon...