mtg the secret lair card Magic: Gathering x vroooOOOMMMMMM! Exclusive Playing Cards Samuel Araya MTG Secret Lairs - Wargamer

Saying otherwise would be a lot like saying to not put milk in your cereal or to not spray badger repellent onto your swamp boots

Except for determining whether or not a permanent can transform, a spell, ability, or rule that needs information about a double-faced permanent sees only the information given by the face that's currently up

In addition to ample Commander play, this card also sees use in both Modern and Legacy

The average Commander deck will prioritize Eternal Witness and ways to recycle its ability before they ever even consider Den Protetor as a back-up, but morph decks can use it as a synergy piece and likely have ways to reuse its morph ability to pick up extra cards