Gelatinous Champion is a kind of essence that gives 3000 skill talent points.They are also not as powerful as other heroes, even though it's a high level. It's more like an elite hero, one that has to go to the attacker completely and attack with something face-to-face. A Paladin is some kind of knight hero, but it is not very effective.You should also keep Gelatinous Champion essences so you can use them for skill talents. Keep all legendaries you get, except if they are a bad hero, such as a Paladin. Ordinary and elite heroes can be helpful, but some elite heroes are slow and they have to actually go right to the enemy to attack instead of attacking from far distances. Sell any heroes you don't want, such as ordinary ones.