psa 7 pokemon card back Mewtwo V 073/071 SR | Pokémon GO s10b Sending off 40 Pokémon Cards

Note that they arent unique in terms of rules

There are literally volumes that could be (and have been) written about what constitutes an efficient creature in Limited and how highly you should pick certain cards over others

Competition for Cards: With so many collectors in one place, competition for rare cards can be intense

Enchantment Enchantment (CTRL to add secondary) Enchantments Have Enchantments Have (CTRL to add secondary) Expensive Agatha's Soul Cauldron You may spend mana as though it were mana of any color to activate abilities of creatures you control

As a bonus, and a possible reference point for future Mind Stone sales, let's check out the Soul Stone from MTG's Spider-Man set

I actually think this is a very elegant and fun decision