Legions

At the beginning of your upkeep, sacrifice Krosan Cloudscraper unless you pay {G}{G}. Morph {7}{G}{G} (You may cast this card face down as a 2/2 cr...

Drinker of Sorrow can't block. Whenever Drinker of Sorrow deals combat damage, sacrifice a permanent.

Flying {T}, Tap two untapped Birds you control: Return target permanent to its owner's hand.

Noncreature spells cost {1} more to cast.

Double strike (This creature deals both first-strike and regular combat damage.) Morph {4}{R}{R} (You may cast this card face down as a 2/2 creatur...

Whenever a Sliver deals damage, its controller gains that much life.

At the beginning of each player's upkeep, that player mills X cards, where X is the number of cards in their hand.

Flying Morph {6}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Imperial Hel...

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

Goblin Goon can't attack unless you control more creatures than defending player. Goblin Goon can't block unless you control more creatures than a...

Haste Sacrifice a Goblin: Clickslither gets +2/+2 and gains trample until end of turn.

Flying Whenever Hollow Specter deals combat damage to a player, you may pay {X}. If you do, that player reveals X cards from their hand and you cho...

Morph {X}{B}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Bane of the Living ...

{1}{U}: Change Riptide Mangler's base power to target creature's power. (This effect lasts indefinitely.)

{T}: The next time a source of your choice would deal damage to you this turn, that damage is dealt to Beacon of Destiny instead.

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

Flying Morph {2}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Dermoplasm...

Flying Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Tribal Forcemage is tu...

Primal Whisperer gets +2/+2 for each face-down creature on the battlefield. Morph {3}{G} (You may cast this card face down as a 2/2 creature for {3...

Morph {3}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Unstable Hulk is tu...

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

At the beginning of each player's upkeep, that player puts the top X cards of their library into their graveyard, where X is the number of cards in...

Untap all permanents you control during each other player's untap step.