Sheldon's Spellbook

Command Tower

$6.47

{T}: Add one mana of any color in your commander's color identity.

Eladamri's Vineyard

$1.99

At the beginning of each player's first main phase, that player adds {G}{G}.

Greater Good

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Inkshield

$13.42

Prevent all combat damage that would be dealt to you this turn. For each 1 damage prevented this way, create a 2/1 white and black Inkling creature token with flying.

Sheldon, the Commander (Ruhan of the Fomori)

$0.96

At the beginning of combat on your turn, choose an opponent at random. Ruhan attacks that player this combat if able.

Sol Ring

$16.11

{T}: Add {C}{C}.

Teferi's Protection

$49.12

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.) Exile Teferi's Protection.