Belia, the River's Grasp

When Belia, the River's Grasp enters the battlefield, you may return any number of
Islands you control to their owner's hand.
If you do, it enters the battlefield with that
many +1/+1 counters on it.
{u}, Remove a +1/+1 counter from Belia,
the River's Grasp: Create a 1/1 green Snake
creature token with deathtouch.