Mind Maggots
{3}{B}
Creature — Insect
Oracle Text
When this creature enters, discard any number of creature cards. For each card discarded this way, put two +1/+1 counters on this creature.
Watch Out
ETB trigger, not a cast triggerRules Note
This card's ability triggers when it enters the battlefield, not when it's cast. Effects that double ETB triggers (like Panharmonicon) work here. Countering the spell prevents the creature from entering, so the ETB won't fire.