March 16, 2018 Triggered abilities use the word "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." March 16, 2018
The Feel Test After handling thousands of Magic cards, your fingers know what feels right
What makes the card so powerful is the ability to exile any non-land permanent with a mana value of 4 or less, if the Apparition leaves play, your opponent creates an Illusion token instead
Almost inevitably this means relying on permanents with disruptive static abilities that tax or outright prevent certain game actions
This effectively gives you a reanimate on a stick and it's particularly good because you can do this ability multiple times a turn
, : Exile another target creature you control, then return it to the battlefield under its owner's control