Chain of Vapor [Onslaught] Legendary Planeswalker {T}: Add one mana of

{T}: Add one mana of any color

you may put a land card from your hand onto the battlefield

Set: Eldritch Moon Prerelease Promos Type: Enchantment Rarity: Rare Cost: {W} You may cast Aura and Equipment spells as though they had flash

then put two cards from your hand on top of your library in any order

but I didn't expect it from the building itself

Chain of Vapor [Onslaught] Legendary Planeswalker {T}: Add one mana ofSet: 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.