First, The Ring can tempt you even if you don't control a Creature
and the song One Jump Ahead are all important cards that add extra ink to your inkwell, allowing you to play cards like Mufasa, King of the Pride Lands and Maui, Demigod before your opponent has a way to deal with them
The actual effect of the card isn't anything special (see: Sokka, Tenacious Tactician), it's really just a matter of whether rulebreaker truly breaks the card or not
Honorable Mentions These are sideboard all-stars in the making
With Abyss Proxy Shop, you can play with Aragorn, the Uniter and every legendary Commander staple you need all without spending a fortune
You could work out a deal with a player who would otherwise just kill Shelob by giving them their dead creature back