mtg double faced cards color identity Cranial Insertion What is the color identity

Flash (You may cast this spell any time you could cast an instant.) Flying

Virtue of Persistence Now thats a split card

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 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

Most +1/+1 commanders focus on making the number go up, but Dyadrine uses counters as a resource to grow your board