Even the borderless variants hover around $2
B-Tier: Make Your Case, But I Lean No Braids, Cabal Minion (bulk) Emrakul, the Aeons Torn ($20) Hullbreacher ($3) Trade Secrets ($1) I think that these all represent cards that are unfun in most settings, and should stay banned
However, since the power-up ability was already activated, it can't be activated again
It's MH3) most likely to pick this up are Scam and UR Prowess, which often want to use mana as efficiently as possible and care about clearing the many, many Karnstructs Urza's Saga produces
If you play Jafar Aspiring Ruler to give him Challenger +2, he could be enough of a threat to make his ability work, leaving another character exerted to challenge to finish the combo and get Fa Zhous 3 lore
Cards that gleefully encourage and expedite violence in Magic are the bleeding heart of Group Slug decks