Slimer Voracious Apparition The Mimeoplasm

“<div class="SecretLair"><strong> Monstrous Magazine</strong></div><br>As Slimer enters the battlefield, you may exile two creature cards from graveyards. If you do, it enters the battlefield as a copy of one of those cards with a number of additional +1/+1 counters on it equal to the power of the other card.”