Aisling Leprechaun
Legends — common
Creature — Faerie
Aisling Leprechaun rulings:
2004-10-04: Creatures change color as a triggered ability upon the block being declared.
2004-10-04: The change to green does not end even if the Leprechaun leaves the battlefield.
2004-10-04: A Leprechaun with Protection from Green can be blocked by a creature (since it is not green at that time) but will not take damage from the creature (since it is green during the combat damage step).