Celestine Cave Witch
{3}{B}
Creature -- Human Warlock
2/3
When CARDNAME enters the battlefield, create two 1/1 black Insect creature tokens.
Whenever CARDNAME attacks, you may sacrifice an Insect. When you do, curse defending player. (Create a black Aura Curse enchantment token that's attached to that player. It has enchant player and "At the beginning of your upkeep, you lose 1 life.")