Havenwood Fortress
Land (Rare)

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

Tap: Add G to your mana pool. If you played a land this turn, Add W to your mana pool instead.

GW: Havenwood Fortress becomes a 2/1 green and white Elf creature until end of turn. It's still a land.

Allan Guay