While there are some synergies, like copying Dark Depths or a huge creature to get in an attack, for the most part, Mirage Mirror is a fun value card but not especially powerful as a build-around-me
So unless they have a way to destroy their own Land or remove the Enchantment, the commander is stuck
Not only is it perfect as a creature with an ETB effect, which is just what the Golgari deck wants, but it also enables the base green 3-5 color decks
Versatility is the name of the game for Hide / Seek its great for removing artifacts and dealing with enchantments versus decks that are likely to recur them, and it helps you eliminate your opponents key cards in Game 2 once youve seen their deck
Getting a cheeky menace creature as a semi-free bonus for attacking can often be enough to push damage through
I really like Sorceress Queen 's very extra pose as she floats above her fanged, stout ogre minions