Obsidian Obelisk [Dominaria United Commander] Unstable Set: Urza's Saga Type: Instant

Set: Urza's Saga Type: Instant Rarity: Common Cost: {B} Add {B}{B}{B}

As a planeswalker

Players need to collect raw materials

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Commander Type: Instant Rarity: Rare Cost: {5}{G}{G} Choose a creature type

Set: Kamigawa: Neon Dynasty Type: Legendary Creature — Phyrexian Praetor Rarity: Mythic Cost: {5}{U}{U} Whenever you cast an artifact

Obsidian Obelisk [Dominaria United Commander] Unstable Set: Urza's Saga Type: InstantSet: Dominaria United Commander Type: Artifact Rarity: Rare Cost: {2} Obsidian Obelisk enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a multicolored spell.