Kherpri's Horn is already a pretty powerful exotic. If you hit a Guardian in the Crucible with both the outward and inward pulse, it will kill them (even hitting with only one takes away a considerable amount of their health). It's also great for clearing ads in tight areas. I believe you made a mistake in stating that it doesn't do solar damage. I've been able to do bonus damage with it in activities with Solar Singe. It also stacks up Roaring Flames (RF) with the Burning Maul Sunbreaker tree, and RF x3 will increase its damage just like it does with grenades and the throwing hammer. I've actually intended to test the effects of RF x3 on Guardian to see if allows you to do a one pulse kill, which would be epic. As far as changes go, I think that getting kills with it should cause solar explosions that chain in a similar way to that of Sunshot. It should also increase the speed of barrier summoning. Optionally, it could even have a knockback effect (but that might be asking for too much). These changes will enhance its add clearing abilities, making it great for encounters with swarms of enemies. Its increased barrier summoning speed helps to take down fast enemies like thrall before they reach melee range (which isn't affected by the pulse for some reason). The knockback effect would help keep enemies off of important objectives like control points, power ammo crates, dead guardians, etc. Tbh, I hope more people try it out. I think Bungie buffed it in a past update because it can be overpowered when used properly. [spoiler]Edit: Make Eternal Warrior like Skull of Dire Ahamkara bur for Thundercrash.[/spoiler]