Chimera Shadow Garden

When Chimera Shadow Garden enter the battlefield, if another Domain is on the battlefield, they clash. (When 2 Domain clash,
their owner each roll a D20, the player with the
lower score Sacrifice his Domain. A player can't have
2 domains.)
Creatures your opponents control gains -1/-0.
{2} : Create a 2/2 Shadow Animal token with
Hexproof.