Grasp of Darkness

Target creature gets -4/-4 until end of turn.

Village Rites

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Goblin Arsonist

When Goblin Arsonist dies, you may have it deal 1 damage to any target.

Dire Fleet Warmonger

At the beginning of combat on your turn, you may sacrifice another creature. If you do, Dire Fleet Warmonger gets +2/+2 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Deathbloom Thallid

When Deathbloom Thallid dies, create a 1/1 green Saproling creature token.

Hobblefiend

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
{1}, Sacrifice another creature: Put a +1/+1 counter on Hobblefiend.