M

2

Legendary Creature — Elf Spirit

3

3

At the beginning of combat on your turn, up to one target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is Obuun's power. It's still a land.

Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on target creature.