This is basically a version/merger of the Storm of X feats from the ELH. You can make an attack against everything within 30 ft (melee if you can reach them all, or ranged, or a mix). Also reduces iterative penalties. Not super exciting, but nice if you are surrounded! There's synergy stuff, but it is all calls forward to feats I have not mentioned yet so I'll circle back. EDIT: Specifically Epic Warrior and Perfect Two-Weapon Fighting.Next up, Epic Multi-Attack.
I have already talked about Epic Occult (Spell)caster and Epic Primal (Spell)caster, so next up in between them is Epic Performer. The first thing this does is makes rounds of Bardic Performance (or Raging Song) per encounter rather than per day. In practice, this generally means you do not need to track them unless you use a bunch of stuff that costs extra rounds (I almost phrased it as "you do not need to track them unless you spend extra rounds"), but I decided that that was....not exactly more complicated, but easier to misinterpret.
You also gain two extra abilities to make use of said rounds (from a choice of four): Deafening Song and Hindering Song are as per the ELH feats of the same names. Enhance Weapons is as per the Spell Warrior skald archetype, and Glorious Epic is as per the Dragon Skald archetype ability. I wanted to give a little more choice than just the first too, and having sat at a PFS tables with a Spell Warrior I can vouch for Enhance Weapons being a really cool ability!
Next up Epic Rage.