Tamusaru, Jotun of the Wilds

Shroud, Defender
Whenever an opponent attacks with a creature,
they must tap a land that shares a color with that creature.
Players may only have X number of creatures on
the battlefield where X is the number of lands
they control.
You may pay {2}{w}{u}{b}{r}{g} to cast Tamusar,
Jotun of the Mountain
Not even wind blows through the mountains without
the permission of the guardian.