Chain of Vapor [Onslaught] Return to Ravnica where X is the number

where X is the number of creature cards in your graveyard

Other Elves have shroud

Set: Commander's Arsenal Type: Legendary Creature — Human Advisor Rarity: Rare Cost: {3}{R} {T}: Destroy target creature of your choice

Set: Betrayers of Kamigawa Type: Artifact Rarity: Rare Cost: {5} The "legend rule" doesn't apply

Chain of Vapor [Onslaught] Return to Ravnica where X is the numberSet: Onslaught 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.