I can also see this card going into a lot of 5-color Commander decks in need of good fixing, especially superfriends decks
Pro tip: EDHRec shows average mana value for popular commanders
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Every time you cast your first spell in a turn, you deal damage equal to that spell's mana value to a random opponent, hitting either them or a planeswalker they control
While Rakdos Madness is the precon I'm most excited to play with because I like a lot of the non-madness cards in the deck, I fully expect to lose when I do
(Don't lay your noncreatures out at this point unless they're cards you are planning to play as soon as you have that much manafor example, you will generally cast a Pouncing Lynx on turn two, whereas Divine Arrow isn't usually a turn-two play.) A good "mana curve" of creatures is crucial to a successful Sealed deck