Doubling Cube [The List] The Four Emperors Set: The List Type: Artifact

Set: The List Type: Artifact Rarity: Rare Cost: {6} When Contagion Engine enters the battlefield

Set: Legacy of Destruction Card type: Continuous Spell Rarity: Quarter Century Secret Rare Cannot be destroyed by monster effects

and it gets [Power] +5000 until end of turn

if you have a character in play with more Strength than each opposing character

Doubling Cube [The List] The Four Emperors Set: The List Type: ArtifactSet: The List Type: Artifact Rarity: Rare Cost: {2} {3}, {T}: Double the amount of each type of unspent mana you have. The cube's surface is pockmarked with jagged runes that seem to shift when unobserved.