Legions

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 Voidmage Apprentice...

{T}: Add X mana of any one color, where X is the number of Elves on the battlefield.

{B}, Pay 1 life: Add one mana of any color.

When Merchant of Secrets enters the battlefield, draw a card.

{T}, Sacrifice three Clerics: Search your graveyard, hand, and/or library for a card named Scion of Darkness and put it onto the battlefield. If yo...

All Sliver creatures have "{2}: This creature gets +1/+1 until end of turn."

Defender (This creature can't attack.) Whenever Wall of Hope is dealt damage, you gain that much life.

Whenever another nontoken Elf enters the battlefield, you may create a 1/1 green Insect creature token.

Morph {2}{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 Master of the Veil is ...

At the beginning of your upkeep, you draw X cards and you lose X life, where X is the number of Zombies you control.

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...

All Slivers have "{T}: Regenerate target Sliver."

Beasts can't block.

Covert Operative can't be blocked.

Flying {1}: Swooping Talon loses flying until end of turn. Provoke (Whenever this creature attacks, you may have target creature defending player c...

Flying Morph {3}{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.)

Sacrifice a Goblin: Regenerate Goblin Turncoat.

As long as you control a Beast, Skirk Outrider gets +2/+2 and has trample.

{1}{B}, {T}, Sacrifice a creature: Search your library for a Zombie card and a Swamp card, reveal them, and put them into your hand. Then shuffle y...

Amplify 3 (As this creature enters the battlefield, put three +1/+1 counters on it for each Dragon card you reveal in your hand.) Flying {T}: Kilnm...

Haste Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

{7}{R}: Flamewave Invoker deals 5 damage to target player or planeswalker.

Morph {2}{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 Patron of the Wild is ...