Manifold Mouse

Offspring {2} (You may pay an additional {2} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)
At the beginning of combat on your turn, target Mouse you control gains your choice of double strike or trample until end of turn.

Cría {2}.
Al comienzo del combate en tu turno, el Ratón objetivo que controlas gana a tu elección la habilidad de dañar dos veces o arrollar hasta el final del turno.