Mana Echoes
{2}{R}{R}
Enchantment
Oracle Text
Whenever a creature enters, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.
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.