By finding a gap in your enemy's defenses, you allow your allies to take advantage of your discovery. When you confirm a critical hit with a melee or ranged weapon against an opponent, allies within 30 feet of that opponent add your tier to their critical confirmation rolls against that opponent. This bonus lasts for a number of rounds equal to your tier. During this duration, you can expend one use of mythic power to convert an ally's successful attack into a critical threat. The ally must be within 30 feet, and can also gain the bonus to its confirmation roll. Only one opponent can be the focus of your directed assault at a time. If you confirm a critical hit against another creature, you may make it the new focus (immediately ending the previous focus) or maintain the current focus.