Giving the attached creature a host of abilities, including flying, first strike, trample, and haste, along with a boost to a base power and toughness of 9/9, even with its high cost of 7 colorless mana to cast, its not hard to see why it was such a hot commodity card in 2025
Until they print something that says when a creature is returned to your hand exile it and then return it to the battlefield at the end of turn, Denizen of the Deep seems mostly unplayable
Some argue that these consistently powerful strategies involving combo elements arent always fun to play against and may not be in the spirit of Commander, but I think setting clear expectations with your playgroup will help curb frustrations
Cryptic makes you safer, but it doesn't offer you the "I am just going to draw three and that will win me the game" element to be working towards
As the Kitty Artifact subtheme takes hold and people are trying out new decks, like Nazahn, dont forget to get them a whirl too