Rings of Brighthearth [Kaladesh Inventions] Standard you'd need the energy of

you'd need the energy of the giant's tonic

Set: From the Vault: Exiled Type: Land Rarity: Mythic {T}: Add {C}

that player sacrifices it

" Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it

−7: Chandra

Rings of Brighthearth [Kaladesh Inventions] Standard you'd need the energy ofSet: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {3} Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy. Crafted in emulation of dwarven hearth decorations, these devices doubled the output of Amrit Vatyam's forges.