I personally use two 5ks and a 2k to hold all my disparate Magic cards
It also has a much more affordable mana cost and the morph helps with tricking opponents into killing something else first
Derevi, Empyrial Tactician Derevi, Empyrial Tactician has one of the most absurd abilities in the game, ignoring commander tax by entering from the command zone for 4 mana every time at instant speed
For example, Kaheera, the Orphanguard's restriction is that all creatures in the deck must be either a Cat, Elemental, Nightmare, Dinosaur, or Beast card
In the interest of time, I'll just acknowledge a couple here
If you were to copy a kicked spell, that copy would be kicked too