Currently, Khepri's Horn feels like quite a redundant exotic. It gives you more uptime on your barriers when you use it correctly and it send a single line of fire away from the barrier, like a bugged thermite grenade. What if we replaced that column of fire with a phalanx shield blast?! (With solar visual effects of course) The blast could be similar in damage and could extend forward quite a bit, but more importantly, the knockback would be hilarious! A Tractor Cannon boop on a cool down. This would make the exotic go from forgettable to genuinely fun! Think of the montage potential.