Abandoned Creek
Land (Rare)

When Abandoned Creek enters the battlefield, you lose 1 life unless you reveal an enchantment card from your hand.

Tap: Add W or U to your mana pool.

Put Abandoned Creek on top of your library: Add 1 to your mana pool.

1U: Abandoned Creek becomes a 1/1 white and blue Bird creature with flying until end of turn. It's still a land.

Mark Avon