Define your element completely while being as concise as possible. (You cannot define your element as itself.)
So: clarity -> completeness -> conciseness.
Good stall: Antimatter, Chaos Seed, Pandemonium, Dissipation, Maxwell's Demon
RNGed CC: Chaos Seed, Pandemonium
Fast and cheap damage: Lycans
Denial: Discord
Buff: Chaos Power, Mutation(Well, mostly), Fallen Elf(Well, mostly)
Fast quanta: Nova
Powerful creatures: Purple Dragon
Good abilities: Schroedinger's Cat, Maxwell's Demon
I win card: Purple Nymph (Also Cat, everyone knows Cat is win)