Revered Unicorn
Weatherlight — uncommon
Creature — Unicorn
Revered Unicorn rulings:
2008-04-01: Revered Unicorn’s leaves-the-battlefield ability triggers no matter how it leaves the battlefield, not just when you don’t pay its cumulative upkeep.
2008-04-01: If you choose not to pay Revered Unicorn’s cumulative upkeep, it will still get an age counter before being sacrificed, which impacts the amount of life you gain.