Crucible of the Spirit Dragon [Commander 2017] SPA Prototipo lupino "A display of humility is

"A display of humility is required of those who still possess such frailties

where X is the total power of the creatures sacrificed this way

That player puts that card into their library third from the top

Set: Champions of Kamigawa Type: Creature — Moonfolk Wizard Uncommon Cost: {4}{U} Flying {4}

Set: Legends Type: Legendary Creature — Human Wizard Uncommon Cost: {3}{U}{U}{B} {T}: Add {U}

Crucible of the Spirit Dragon [Commander 2017] SPA Prototipo lupino "A display of humility isSet: Commander 2017 Type: Land Rare Cost: {T}: Add {C}. {1}, {T}: Put a storage counter on Crucible of the Spirit Dragon. {T}, Remove X storage counters from Crucible of the Spirit Dragon: Add X mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons.