You can play as many fetchlands as you want from the graveyard, and unlike Crucible of Worlds or Ancient Greenwarden, its not getting removed permanently since it lives in the command zone
Additions: Cuts: Here's how the deck looks with the upgrades added: The deck has a lower mana curve, way better card draw, upgraded Knights, upgraded removal, and better mana-fixing
Dragon Tempest converts Dragons into damage
If you copy a bestow card that is an aura, a token copy of the bestowed card is created and attached to a new creature, in Ivy, Gleeful Spellthiefs case, it would need to become attached to itself
The cycle cost is a little expensive at four mana, but when its cycled you create two Treasure tokens, which goes a long way towards casting Sauron ahead of curve
Those that learn Magic through Avatar: The Last Airbender might never see the unique bending mechanics recreated, but will recognize convoke, flicker, temporary red ramp, and land animation when they inevitably show up on new Magic cards as ways to relate to waterbending, airbending, firebending, and earthbending