Destroy target artifact, creature, or planeswalker.

: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.)
Whenever one or more +1/+1 counters are put on Benthic Biomancer, draw a card, then discard a card.

When Biogenic Ooze enters the battlefield, create a 2/2 green Ooze creature token.
At the beginning of your end step, put a +1/+1 counter on each Ooze you control.
: Create a 2/2 green Ooze creature token.

Distribute three +1/+1 counters among one, two, or three target creatures, then double the number of +1/+1 counters on each of those creatures.

Activated abilities of creatures you control cost less to activate. This effect can't reduce the mana in that cost to less than one mana.
: The next time target creature adapts this turn, it adapts as though it had no +1/+1 counters on it.

Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
When Blade Juggler enters the battlefield, it deals 1 damage to you and you draw a card.

Target creature gains deathtouch until end of turn.
Draw a card.

(: Add or .)
As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Whenever Bloodmist Infiltrator attacks, you may sacrifice another creature. If you do, Bloodmist Infiltrator can't be blocked this turn.

, Remove a +1/+1 counter from a creature you control: Bolrac-Clan Crusher deals 2 damage to any target.

(: Add or .)
As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Exile target creature with power 4 or greater.

Creatures you control get +2/+0 until end of turn.

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.)
Whenever Burning-Tree Vandal attacks, you may discard a card. If you do, draw a card.

Captive Audience enters the battlefield under the control of an opponent of your choice.
At the beginning of your upkeep, choose one that hasn't been chosen —
• Your life total becomes 4.
• Discard your hand.
• Each opponent creates five 2/2 black Zombie creature tokens.

Carnage deals 3 damage to target opponent. That player discards two cards.

Carnival deals 1 damage to target creature or planeswalker and 1 damage to that permanent's controller.

Flying
When Carrion Imp enters the battlefield, you may exile target creature card from a graveyard. If you do, you gain 2 life.

Whenever a creature you control with power 1 or less attacks, Cavalcade of Calamity deals 1 damage to the player or planeswalker that creature is attacking.