Chain of Vapor [Commander 2016] Duel Decks Anthology Set: Fallout Type: Legendary Creature

Set: Fallout Type: Legendary Creature — Bear Rarity: Rare Cost: {1}{G} Whenever another Bear enters the battlefield under your control

Set: Tempest Type: Artifact Rarity: Rare Cost: {2} Blue spells you cast cost {1} less to cast

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If the sacrificed creature was legendary

Chain of Vapor [Commander 2016] Duel Decks Anthology Set: Fallout Type: Legendary CreatureSet: Commander 2016 Type: Instant Rarity: Uncommon Cost: {U} Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land. If the player does, they may copy this spell and may choose a new target for that copy.