Azrel, Singing Storm

Azrel gains +X/+X, where X is equal to the number of otters you control.
When Azrel enters, create 3 1/1 red blue otter tokens with prowess.
When Azrel attacks, create 1 1/1 red blue otter token with prowess.
{t}, Create 2 1/1 red blue otter tokens with prowess.
-Prowess