You would have to ask Crystal Dynamics for permission but if Heartshadow looked like the physical form of the Soul Reaver from the Legacy of Kain series while on your back or out of ammo but the blade lit with purple energy like the Soul Reaver did when it became the ethereal version and bound itself to Raziel. Other players may not see the homage that’s already there but if you ask and it’s approved it’s confirmation and collaboration.(I’d spend my last 1500 silver on it)