If you control both cards and either activate or trigger the meld ability, you then exile both cards and return them to the battlefield melded that is, turned to their back side and arranged so that they form one oversized card
We all know this to be great because it is and has been for a long while
Its practically Necrotic Ooze
I play this card in my Celestine, the Living Saint deck and it feels pretty flavorful there, but the coolest place where Ive seen it is in a Kutzil, Malamet Exemplar Cats deck, as a way to protect creatures during combat and enable the card draw even if there were no anthems on board
Sure, if youre an experienced player, this how-to-play guide will be instant paper waste but if youre a big Assassins Creed fan that is using this release to get into MTG for the first time, itll serve you well
What Happens If You Remove a Counter from a Summon