A nice aspect of the Game Changerse list is that it allowed cards like Coalition Victory, which players had previously wanted unbanned, to become legal again, but restricted to higher-level play
This means it powers up until the end of the turn when Im casting spells (a little like Prowess), but with the added bonus that big spells (of five or more mana) will create a token of it, which will also have haste and be ready to hit hard
Thurid, Mare of Destiny is a pegasus that belongs in the section below as well, and is a straightforward payoff for playing lots of unicorns
The worst one for foes is two-drop Baral, Chief of Compliance who adds in the countering to draw and discard too
Kodama of the East Tree Eastern Kodama is a powerful partner for any commander looking to do generally unfair things
Banishing Slash is a step ahead of Intercessor's Arrest and Touch the Spirit Realm both because it can pre-clear an unflipped Saga and because it might be a Shriekmaw