While I like this card a lot, it feels much more like a combat trick than it does a commander
Lorwyn , Morningtide , and Shadowmoor are all part of this novel series and its a pretty good story from pre-Gatewatch times
Terra, Herald of Hope Ive seen lots of chatter comparing Terra, Herald of Hope to Alesha, Who Smiles at Death, attempting to categorize one as strictly better than the other and thats a lost cause
Aurelia, the Warleader Built to enable massive bursts of combat damage, Aurelia, the Warleader can end games the moment it attacks
Slimefoot, the Stowaway Slimefoot, the Stowaway is a more classic saproling commander, and you can pump saprolings out by paying 4 mana
But you could scramble those and pair Vader with a cunning base to play an Asteroid Sanctuary without penalty