Havenwood Delta
Land-Forest Island (Rare)

(Tap: Add G or U to your mana pool.)

At the beginning of your upkeep, Havenwood Delta deals 1 damage to target creature you control.

GG, Tap, Sacrifice Havenwood Delta: Destroy target artifact.

2, Tap: Target land becomes a 3/3 blue Cephalid creature until end of turn. It's still a land.

Lars Avon