Trelix, Showoff Summoner

Whenever Trelix, Showoff Summoner enters the battlefield, you may cast a creature from your
hand without paying its mana cost. It gains
"Return this creature to your hand at the
beginning of the next end step."
{3}{t}: Exile Trelix, Showoff Summoner,
then return it to the battle field.
Encore {2}{b}