Keep of the Qamaru

When Keep of the Qamaru enters play, you may
tap an untapped Merfolk creature you control.
If you don't, it enters tapped.

{t}: Add {g} or {u}.

{1}{g/u}, {t}: Create a 1/1 green and blue Merfolk
Soldier creature token with hexproof. Activate only
as a sorcery.