If your card draw is kind, you could ramp up your goblins to an insane amount of damage
5 Valki, God Of Lies Cosmic Impostor Market Price: $12.41 Valki, God Of Lies is a flipwalker that wound up causing the rules of cascade to change so the front side of the card was the only side you could cast, since cheating Tibalt, Cosmic Impostor into play proved to be too good for many formats
Toph, Earthbending Master (TLE) $48 Avatar: The Last Airbender has a full cycle of legendary cards that work with experience counters, and Ill always think of good experience counter cards we already have like Meren of Clan Nel Toth or Otharri, Suns' Glory
During Ikoria Standard they were as little as $5 or $6, although I'm not sure the New Capenna Triomes well go as low now that everyone knows just how good the lands are in Commander and even in non-rotating 60 card formats like Pioneer and Modern
While this is certainly a flavor win, I do think this mechanic does present one very real problem its going to result in some serious feel-bad moments
Nicol Bolas, the Ravager / Nicol Bolas, the Arisen Just 4 mana gets you Nicol Bolas, the Ravager and immediately forces your opponents to discard
