"Look, I drafted Human control!" "Wow, UR Wizards can be really good when the right enablers show up." I've been down the incidental tribal road before
You can make good use of Renounce the Guilds by putting it in a mono-white deck, or in any other deck that happens to not play with very many multicolored permanents
All of these sound exceptional on rate, so why arent more decks maxing out on hand attack
BPhillipYork: This enables a whole deck around discarding and replaying, essentially giving madness to everything in your deck, though, obviously it's mayhem
Betor, Kin to All may not be the most popular Abzan Commander, but few Legendary Creatures in the wedge can threaten to cut everyone's life totals in half with a single trigger while presenting lethal amounts of power on board
Mirri, Weatherlight Duelist (one of the best Cats for Commander) delivers this effect only if she's attacking and/or tapped, and the four-mana 1/5 Construct artifact creature Silent Arbiter is a straight-up reprint of Dueling Grounds in creature form