Sunpetal Key
Land (Rare)

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

1, Tap: Add WW, WU or UU to your mana pool. Sunpetal Key deals 1 damage to you.

At the beginning of your upkeep, you may gain 1 life.

Steve Tedin