Didact Echo
{4}{U}
Creature — Spirit Cleric
Oracle Text
When this creature enters, draw a card.
Descend 4 — This creature has flying as long as there are four or more permanent cards in your graveyard.
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.