Mana Vault [Revised Edition] Token Artifact Creature but upon arrival you find

but upon arrival you find yourselves forced to take part in a macabre game

When Worldspine Wurm dies

" —Shauku

Set: Kaladesh Inventions Type: Artifact — Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2/+2 and has protection from white and from black

if no spells were cast last turn

Mana Vault [Revised Edition] Token Artifact Creature but upon arrival you findSet: Revised Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.