Anchor Weald
Land (Rare)

At the beginning of your end step, if you didn't cast any spells this turn, Anchor Weald deals 1 damage to you.

Tap: Add G or U to your mana pool.

1U: Anchor Weald becomes a 1/1 green and blue Merfolk creature with flying until end of turn. It's still a land.

Justin Moeller