Mike, Gremlin Wrangler

Trample
When Mike enters the battlefield, put X 1/1 Blue
Gremlin Creature tokens onto the battlefield.
{x}{t}: Put X 1/1 Blue Gremlin Creature tokens
onto the battlefield.
If you control no Gremlins, return Mike to from
the battlefield to your hand.
I don't know why i keep coming in here