To use Isochron Scepter, the player has a few options, such as using white, red, and blue to use Gandalf the Grey, a creature heavily focused on instants and sorceries
While that would have been cute for a regular EX, its extremely risky for a Mega Evolution, losing which instantly ends the game with you on the losing side
I decided to go with Open Hostility at number three because it has the single most played reprint commander in Alesha, Who Smiles at Death, which comes in at #13 overall
If you take Chansey as a face-down Prize Card and your Bench isnt full, you can put Chansey down on your Bench
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