In FF7 , Jenova is described as a calamity that fell from the sky long ago. Shes not a mutant herself but is instead an alien with a mutable genetic structure, absorbing the traits of beings she encounters while also inserting her own DNA into them, transforming them into mutants that eventually can turn into monsters
Hark, hear the Chocobo call forth
A card like Yeva, Nature's Herald or Vedalken Orrery can let you dump your hand out across your opponents turns and play entirely at instant speed
I personally see having some mtg cards around as a way for me to remember the game if square ever turns it off
The Wind Crystal gives all your creatures flying and lifelink, which can lead to massive lifegain and mill
The possibly-busted Mickey Mouse Inspirational Warrior jumps into action, banjo string at the ready