mtg double faced cards color identity Cranial Insertion Should non-creature MDFC cards be

This especially limits your ability to interact with people that interact with your combos, though Naya creatures combo off with enough variants you could likely get away with having more combos than your opponent's interaction if youre lucky

You may reveal an Equipment or Vehicle card from among them and put it into your hand

You lose a card from your hand for no impact on the board and dont even get the benefit of an artifact in the graveyard for delirium or similar synergies

Hexproofing your other creatures means its something youre going to have to watch out for in a number of ways, although it doesnt do a huge amount against board wipes, and Standard has a lot of those right now

So is Naked Singularity