If there ever was a format where prowess would be at its best, it is Legacy
I tried to make it into a three-color deck at one point after Shards of Alara released, adding blue for the Mindlock Orb, I also used Angelsong, Batwing Brume, Cauldron Haze, and Day of Judgment as lesser replacements for Darkness , Dawn Charm, Enduring Renewal, and Damnation/Wrath, respectively
If you hit an opponent who has more cards in hand than anyone else, you draw a card
Thunder King Rai-oh, Black Horn of Heaven) cannot activate when you Pendulum Summon multiple monsters
It costs eight, but you can do it as an instant, and it fits tightly with the decks theme
All monsters belonging to this category are unified with light attribute