The Brothers' War FOIL

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
[I] 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.