Mana Vault [Kaladesh Inventions] Magic 2010 and they make sure to

and they make sure to give Aesi a wide berth

you may sacrifice it

Set: Magic 2010 Type: Artifact Rarity: Rare Cost: {5} Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it

Sword of Fire and Ice deals 2 damage to any target and you draw a card

Mana Vault [Kaladesh Inventions] Magic 2010 and they make sure toSet: Kaladesh Inventions Type: Artifact Rarity: Mythic 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}.