Sonic Boom, Mother Griffin

Flying

When Sonic Boom enters, create a 0/1 green Egg creature token with defender for each tapped creature target opponent controls.

Whenever Sonic Boom attacks, tap target creature an opponent controls.

Eggs you control have "{1}{g}, {t}, sacrifice this egg: Create a 1/1 non-legendary token copy of Sonic Boom"

“Full Scream Ahead!”