msem-instigator

As an additional cost to cast this spell, discard a card.
Draw two cards. Add one mana of any color.

Look at the top four cards of your library. You may reveal a noncreature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Civilized — This spell costs {1} less to cast if you control an artifact, a creature, and an enchantment.
Counter target spell.

Consume Creation deals 2 damage to any target and you gain 2 life.

Consuming Flame deals 6 damage to target creature.
Ferocious — If you control a creature with power 4 or greater, the damage can't be prevented and that creature can't be regenerated this turn.

Bloodprice {2}{U} (You may cast this card by sacrificing a creature and paying its bloodprice.)
Draw two cards. If you cast this spell for its bloodprice, instead scry 4, then draw two cards.

When Contagious Ghoul dies, target creature an opponent controls gets -1/-1 until end of turn.
Foreshadow {2}{B} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

When Contagious Host dies, each player loses 1 life.
Revive {2}{B} ({2}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Destroy target artifact or enchantment. Create a 1/1 green Saproling creature token.

Trample
When Contentious Yak enters, another target creature you control gets +1/+1 and gains trample until end of turn.

Destroy target land. Continental Collapse deals 2 damage to that land's controller.

Put target nonland permanent on top of its owner's library. If you control a Wizard, you may put that permanent on the bottom of its owner's library instead.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

Investigate, then counter target spell unless its controller pays {1} for each Clue you control. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Reverberate {3} (When you cast this spell, copy it if you paid its reverberate cost. You may choose new targets for the copy.)
Target creature can't block this turn.
Target creature can't be blocked this turn.

Destroy target artifact. Create two 1/1 colorless Servo artifact creature tokens.

Enchant creature
Enchanted creature gets +1/+3.
{W}: Return Conviction to its owner's hand.

When Convocation Elder enters, create two 1/1 green Elf creature tokens.
{1}{G}, Discard Convocation Elder: Create a 1/1 green Elf creature token. Draw a card. Activate only as a sorcery.

Counter target spell. Return up to one target permanent you control to its owner's hand.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Enchant creature
Concord — When Coral Guidance enters, if there are four or more card types among permanents you control, draw a card.
Enchanted creature doesn't untap during its controller's untap step.

Whenever Coral Hunter attacks, another target creature can't be blocked this turn.

Menace
Whenever a card leaves your graveyard for the first time each turn, invigorate 1. (Choose a creature with the least power among creatures you control and put a +1/+1 counter on it.)

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Cycling {U} ({U}, Discard this card: Draw a card.)

Exile target creature with power 4 or greater.
Create a Treasure token. (It's an artifact with “{T}, Sacrifice this permanent: Add one mana of any color.”)