
You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells you cast.
Fist of Suns has 4 printings, first in Fifth Dawn (2004). EDHREC ranks it #4,492 among Commander cards. It appears most in The Ur-Dragon decks (8,281 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.