Earthcraft is the best source of mana to fuel a number of infinite combos involving Doubling Season, Cathars Crusade, The Meathook Massacre, and Corpse Knight, among others, but these cards only scratch the surface of your combo potential with this commander, so if thats your preferred style of play, the linked primer above is going to be your best starting point for deck construction
I thinks that's a lot this is doing from Voltron to Artifacts matter or Edric deck that need an unblockable and tempo dork too
Super Shredder Big creatures and Voltron strategies tend to be in other colors, but Super Shredder can get pumped to an extreme size efficiently
The fact that Spellspear transforms into an even bigger creature that has Ward 2, trample, and prowess is where things get a little out of control
That said, Ive love to get one of these signed