#chittering host

Chittering Host

We’ll talk about the common meld pair here since it’s the most likely to show up in limited.

Ok, so for the two cards to be able to meld, you need to own and control both Graf Rats and Midnight Scavengers at the beginning of combat on your turn.

Assuming you do when the trigger goes to resolve, the Graf Rats that triggered and the Midnight Scavengers you own and control will be exiled. (If you own and control more than one, then you choose which one gets exiled here.) 

If both of the exiled cards are cards (i.e. not tokens) and actual meld cards (i.e. not clones or under any other copy effect), then you’ll meld them. (If either or both are tokens or copies, then the cards just stay exiled.) 

To meld the cards, your turn them over like double-faced cards. Each one has half of the melded form, Chittering Host, printed on its other side. (Graf Rats is the top half and Midnight Scavengers is the bottom half.) You combine the two halves and return the single oversized melded creature to the battlefield under your control.

Chittering Host, while represented by two cards, is a single creature and a single permanent. Treat it like any other creature or permanent. Its converted mana cost is 7, which is the combined converted mana costs of the two constituent cards. If it leaves the battlefield, it unmelds and both halves revert to Graf Rats and Midnight Scavengers again. They both go to the same zone, be it the hand if it’s bounced, the graveyard if it dies, or exile if it’s exiled.