Eventide

Haste Chroma — When Heartlash Cinder enters the battlefield, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana...

{2}{R}, {T}, Put a -1/-1 counter on a creature you control: Hatchet Bully deals 2 damage to any target.

Wither (This deals damage to creatures in the form of -1/-1 counters.) {R/W}: Duergar Cave-Guard gets +1/+0 until end of turn.

{T}: Cinder Pyromancer deals 1 damage to target player or planeswalker. Whenever you cast a red spell, you may untap Cinder Pyromancer.

Chroma — Umbra Stalker's power and toughness are each equal to the number of black mana symbols in the mana costs of cards in your graveyard.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

{T}: Target player exiles a card from their graveyard. Whenever you cast a black spell, you may untap Merrow Bonegnawer.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Persist (When this creature dies, if it had no -1/-1 cou...

{B/G}{B/G}: Exile target card from a graveyard. You gain 1 life.

Whenever Ashling, the Extinguisher deals combat damage to a player, choose target creature that player controls. The player sacrifices that creature.

{T}: Target red or green creature gets -2/-0 until end of turn.

Whenever a permanent you control becomes untapped, Wake Thrasher gets +1/+1 until end of turn.

Flying {U/R}: Talonrend gets +1/-1 until end of turn.

{1}{U}, {T}: Return target creature with a counter on it to its owner's hand.

{T}: Target creature gains flying until end of turn. Whenever you cast a blue spell, you may untap Merrow Levitator.

Flying {U}: Target permanent becomes blue in addition to its other colors until end of turn.

Flying When Dream Thief enters the battlefield, draw a card if you've cast another blue spell this turn.

{T}: Tap target creature. Whenever you cast a white spell, you may untap Ballynock Trapper.

At the beginning of your upkeep, return a permanent you control to its owner's hand.

{3}: Target blue creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

{2}: Target red creature gains haste until end of turn.

{3}: Target green creature gets +1/+1 until end of turn.

{2}: Target black creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)

{2}: Target white creature gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under it...