Face the farthest enemy and fire 19 shots in that direction for 4 seconds, dashing on occasion to keep hitting enemies. Each shot deals 60/60/120() physical damage and 45/70/210() magic damage.
Combat start: The Sentinel with the most items (ties broken by highest Attack Speed) gains a Shield that grants stacking Attack Speed. When it is destroyed or expires, it bounces to the ally with lowest percent Health and renews. The Attack Speed bonus persists between Shield bounces.
Every 5th Cannoneer attack is replaced with a cannon shot that deals a percent of that attack's damage in an explosion around the target as physical damage.