Mana Confluence [Secret Lair Drop Series] 85 You may spend mana as

You may spend mana as though it were mana of any color to activate those abilities

Set: Nintendo: Black Star Promos Type: Lightning Rarity: Black Star Promo Retreat cost: Colorless

Fabricator Claw Array — Whenever another nontoken artifact creature or Vehicle enters the battlefield under your control

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {6} As Caged Sun enters the battlefield

(To calculate a hypotenuse

Mana Confluence [Secret Lair Drop Series] 85 You may spend mana asSet: Secret Lair Drop Series Type: Land Rarity: Rare {T}, Pay 1 life: Add one mana of any color. Better places poured prismatic dreams into the world, rendering it anew.