Control / Own When the Magic rules refer to the controller of a card or other object, it means what you would expect: the player who currently has that object on their side of the battlefield, who is responsible for deciding how and when to use it
Another example would be with Hidetsugu and Kairi
Interestingly, these cards are exclusive to the Starter Kit, as are several more, non-foil but as yet unspecified cards, so even if you do know how to play Magic, if youre a completist or a die hard Assassins Creed fan, no doubt youll be picking up this particular kit
Especially in long EDH games where youll have mana to spare, and your opponents will likely have more than one enchantment to destroy
Amazon has some third-party sellers listing singles and graded cards, but the experience is poor and the prices are inflated