Sword of Feast and Famine [Mirrodin Besieged] Khans of Tarkir Prerelease Promos The flashback cost is equal

The flashback cost is equal to its mana cost

−8: You get an emblem with "Whenever an opponent casts their first spell each turn

Set: Antiquities Type: Artifact Rarity: Rare Cost: {3} Whenever an artifact you control is put into a graveyard from the battlefield

−X: Chandra Nalaar deals X damage to target creature

Sword of Feast and Famine [Mirrodin Besieged] Khans of Tarkir Prerelease Promos The flashback cost is equalSet: Mirrodin Besieged Type: Artifact Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2 +2 and has protection from black and from green. Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control. Equip {2}