Arcane Signet

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

Sky Diamond

Dimir Signet

Marble Diamond

Marble Diamond enters tapped.
{T}: Add {W}.

Gruul Signet

Swamp

Rakdos Signet

Charcoal Diamond

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

O-Kagachi, Vengeful Kami

Flying, trample
Whenever O-Kagachi, Vengeful Kami deals combat damage to a player, if that player attacked you during their last turn, exile target nonland permanent that player controls.

Moss Diamond

Moss Diamond enters tapped.
{T}: Add {G}.

Simic Signet

Sol Ring

Plains

Boros Signet

Fire Diamond

Fire Diamond enters tapped.
{T}: Add {R}.

Mountain

Forest

Izzet Signet

Golgari Signet

Azorius Signet

Island

Selesnya Signet

Orzhov Signet

Have

Getting

Don't Have