Lucius the Eternal is probably not the best as a commander, since his natural ability to return to the battlefield undermines one of the bonuses given to players by the Commander format (the ability to return their commander to the command zone)
While the deck wasn't especially fast, it did generate an absurd amount of value in the late game, with Emeria, the Sky Ruin to reanimate creatures with enters-the-battlefield triggers and Panharmonicon to double up those triggers
Zada, Hedron Grinder Zada, Hedron Grinder is a fun commander that scales pretty hard as the game progresses
Its a Terror of the Peaks effect in the Command Zone
Its also a great investment: the deck has remained almost unchanged for the duration of its time in Modern, making it an ideal deck to practice over time
Archazia's Island - Amethyst and Steel Best cards: Jafar, Newly Crowned