Should there be any Champion/entity who is made stronger by hate/despair/etc.?
Who here has played Breath of Fire 2? The final boss of that game, Deathevan, is a demon that gains its strength from the hate and despair of the beings that live in BoF2's world, and as such can never truly be destroyed so long as hate and despair exist in the world. Pretty much the above trope.
Would such a villain/entity in Runeterra be unfeasible? Or could such a being exist?