Form of the Dinosaur
{4}{R}{R}
Enchantment
Oracle Text
When this enchantment enters, your life total becomes 15.
At the beginning of your upkeep, this enchantment deals 15 damage to target creature an opponent controls and that creature deals damage equal to its power to you.
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.