"David Sondered" (8)
: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
You may play an additional land this turn.
Draw a card.
Lifelink
Flesh Flayer — When Flayed One enters, mill three cards.
, Pay 1 life: Add or .
, , Sacrifice Horizon Canopy: Draw a card.
: Add .
, , Sacrifice Mind Stone: Draw a card.
Relentless March — , , Tap X untapped artifacts you control: Target opponent loses X life.
, , Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Worn Powerstone enters tapped.
Gatherer works better in the Companion app!
, 
, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.