Caustic Instigator

Casualty 0, casualty 1, casualty 2 (As you cast this spell, you may sacrifice a creature with power 0 or greater, a creature with power 1 or greater, and/or a creature with power 2 or greater. When you do, copy
this spell for each of those creatures. The copies become tokens.)
When Caustic Instigator enters the battlefield,
target creature an opponent controls gets -2/-2
until end of turn. If that creature dies this way,
draw a card.