It costs two to move characters there (not horrible) but once there they gain the incredibly powerful double combo of Ward and Evasive, making them virtually invulnerable
Ive been consistently surprised by Stonecoil Serpent in the Arena Cubes, and its a card that falls within the realm of playable even in Vintage Cube, though merely being an artifact is doing a lot of the heavy lifting there
In some games, early turns of land destruction could build up ones advantage so massively that victory became inevitable
Especially while Invasion block is around, you might as well go crazy with the number of colors you use
Flamewar, Brash Veteran Flamewar is an interesting commander because when I saw him, the first thing I thought about was Prosper, Tome-Bound
Each of the 16 different Final Fantasy games are represented by four bonus sheet cards each