Some are obvious, such as Blue Suns Zenith letting you draw as many cards as you can pay mana for, while others are more subtle, like Light Up the Stage exiling cards and being able to play them
1 Shalai and Hallar
The biggest thing in my mind for not ranking Izoni higher is that if you get behind on the board, and can't attack or pull creatures from your graveyard, this commander has a hard time recovering
So, in a three-color deck built around red, white, and blue, aka the Jeskai colors, an Arid Mesa can fetch up a Raugrin Triome, which is a nonbasic land with the mountain, island, and plains types, and subsequently taps for all three corresponding colors
For those of you who are familiar with our Standard events, the Historic version will follow the same game records, cost of entry, and prize structure