Instead of having a preset list of skills, each player loots skill gems that can be socketed into equipped armor to gain access to that skill. By combining these gems together, players can create powerful custom spells.
1 This Ancestral Warchief skill lets me summon a powerful totem-bound spirit that attacks nearby enemies. 2 The Hatred skill gem augments the Warchief’s attacks, making it deal cold damage that slows enemies. 3 The Culling Strike Support gem further increases damage, but also insta-kills any enemy below 10% HP. 4Blind Support makes the Warchief also blind enemies, making them miss their attacks.
The end result
A powerful totem minion that attacks enemies, slowing and blinding them so I can easily avoid danger.