Argoth, Sanctum of Nature (PBRO-256AP) - The Brothers' War Promos

Argoth, Sanctum of Nature enters the battlefield tapped unless you control a legendary green creature.
: Add .
{2}, : Create a 2/2 green Bear creature token, then mill three cards. Activate only as a sorcery.
(Melds with Titania, Voice of Gaea.)