Doubling Cube [Fifth Dawn] 119 Set: Crimson Crisis Card type:

Set: Crimson Crisis Card type: Effect Monster Rarity: Ultimate Rare Attack: 800 Defense: 400 When your opponent activates a card's effect that inflicts damage

Set: Duelist Pack 1: Jaden Yuki Card type: Fusion/Effect Monster Rarity: Ultra Rare Attack: 2100 Defense: 1200 Elemental Hero Burstinatrix + Elemental Hero Bubbleman

And with the coming of this horror

When it summons by this way

destroy both it and this card

Doubling Cube [Fifth Dawn] 119 Set: Crimson Crisis Card type:Set: Fifth Dawn 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.