Monrica, Goddess of the Ocean

Indestructible, Islandwalk
Monrica, Goddess of the Ocean can only attack
or block if an opponent controls 5 or
more creatures with Defender.
{3}{u}:Create a 3/3 blue Mermaid creature token
with Islandwalk. Activate only once per turn.
Monrica is the reason that Mermaids are only found
on Rigo.