Atheris' Experiments

At the beginning of your upkeep, choose one:
* Target land you control becomes a 4/4 green
Golem creature with trample. It's still a land.
* Target land you control becomes a 2/2 blue
Golem creature with flying. It's still a land.
* Target land you control becomes a 3/3 red
Golem creature with menace. It's still a land.
"If I'm ever to escape this infernal crystal, I'll need
more slaves. Many, many more slaves."
-Atheris, Spirit of the Diamond