As long as an artifact entered the battlefield under your control this turn, creatures you control get +2/+2.
Battalion — Whenever Sentinel Sarah Lyons and at least two other creatures attack, Sentinel Sarah Lyons deals damage equal to the number of artifacts you control to target player.
Sentinel Sarah Lyons is a RW go-wide aggro commander that floods the board with creatures and artifacts. Each turn you drop an artifact (or token) to flip on a +2/+2 team anthem, then alpha strike with Battalion to ping a player for damage equal to your artifact count. You win through combat damage backed by a constant stream of cheap artifacts and tokens.
Haste lets her attack and trigger Battalion the turn she lands.
Anthem is trivially easy to turn on with any artifact, token, or Treasure.
Battalion gives reach/direct damage that ignores blockers and can finish a player out of nowhere.
Aristocrats-proof aggression: artifact tokens fuel both the anthem and the Battalion damage simultaneously.
Battalion only targets one player, so it's slow against three-opponent tables.
Heavily reliant on the commander surviving and connecting; spot removal slows you hard.
Board wipes are devastating to a go-wide artifact/token strategy.
Anthem only applies on turns an artifact entered, requiring constant resources.
No built-in card advantage or recursion in the color identity.