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

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

Until end of turn, target creature loses all abilities and becomes a green Snake with base power and toughness 1/1.
Draw a card.

Flying
Whenever a player casts a nonblack spell, that player loses 1 life.

Destroy target nongreen creature. Its controller loses 3 life if you've cast another black spell this turn.

When Soul Snuffers enters the battlefield, put a -1/-1 counter on each creature.

Flying
You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Whenever Spitemare is dealt damage, it deals that much damage to any target.

Create a token that's a copy of target creature.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

: Add .
, : Create a 0/1 white Goat creature token.
, Sacrifice X Goats: Add X mana of any one color. You gain X life.

Chroma — When Springjack Shepherd enters the battlefield, create a 0/1 white Goat creature token for each white mana symbol in the mana costs of permanents you control.

Swampwalk, forestwalk (This creature can't be blocked as long as defending player controls a Swamp or a Forest.)

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever Stigma Lasher deals damage to a player, that player can't gain life for the rest of the game.

Protection from white and from black
: Stillmoon Cavalier gains flying until end of turn.
: Stillmoon Cavalier gains first strike until end of turn.
: Stillmoon Cavalier gets +1/+0 until end of turn.

: Stream Hopper gains flying until end of turn.

Sturdy Hatchling enters the battlefield with four -1/-1 counters on it.
: Sturdy Hatchling gains shroud until end of turn. (It can't be the target of spells or abilities.)
Whenever you cast a green spell, remove a -1/-1 counter from Sturdy Hatchling.
Whenever you cast a blue spell, remove a -1/-1 counter from Sturdy Hatchling.

Flying
: Regenerate target creature.

: Target creature you control becomes the color or colors of your choice until end of turn.

Target player loses 2 life and you gain 2 life.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Target opponent reveals their hand. You choose a green or white creature card from it. You gain life equal to that creature card's toughness, then that player discards that card.