Remix and add your own character for a different key that is not x or i. To make your ability, draw a card, that includes your ability logo in the middle, the damage output on the top left, the key to press to activate the ability on the bottom left, and the element it is on the bottom right. Damage outputs must from 1 - 100 and have a cooldown from 0.5 - 10 seconds.
Need ideas? - change the HP - change the character - change the iron guy and the attacks of it