Leonin Relic-Warder
Creature — Cat Cleric
When this creature enters, you may exile target artifact or enchantment.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.
2/2
Illustrated by
The List#C17-65UncommonEnglishLegality
Rulings
Jun 1, 2011
If Leonin Relic-Warder leaves the battlefield before its first ability has resolved, its second ability will trigger and when it resolves, do nothing. Then its first ability will resolve and exile the targeted artifact or enchantment with no way to return it to the battlefield.