Star Compass

Star Compass enters tapped.
{T}: Add one mana of any color that a basic land you control could produce.

Thought Vessel

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

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

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

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

All Rats have fear.
{T}, Sacrifice a Rat: Create X 1/1 black Rat creature tokens, where X is the number of Rats you control.