Charcoal Diamond

Charcoal Diamond enters tapped.
{T}: Add {B}.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.

{T}: Add one mana of any color that a land an opponent controls could produce.

Flying, trample
Ward—Discard a card.
Creatures your opponents control have base toughness 1.

{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.

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