La Guerre Fratricide (The Brothers' War) (fr)
Enchantment - Saga (CMC 4)
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I -- Create two tapped Powerstone tokens.
II -- Choose two target players. Until your next turn, each creature they control attacks the other chosen player each combat if able.
III -- The Brothers' War deals X damage to any target and X damage to any other target, where X is the number of artifacts you control.