Im talking about cheap, efficient spells, in the one to three mana range that can copy either spells or permanents or both
Another thing that helps it make the list is the timing tied into the abilities
Double-sleeve your deck with Prismatic Defender Holographic Perfect Fits for extra protection while adding a hidden layer of defense, shine, and personality under your outer sleeves
Blue decks ramping into Mufasa instead of Tamatoa is something to be ready for
Once this is set up, Sanctum of All is the most powerful of all the shrines and starts to cascade all the other shrines into play
Mayael the AnimaMayael the Anima, as a contrary example, doesn't cast her creatures when using her ability, so this enchantment wouldn't help her