Theres some cool stuff ive seen but Im not super familiar with the classes I haven't played. I got a rogue that drops turrets and a paladin thats throws tons of hammers in a spiral, so not exactly brand new ideas for the ones ive picked so far. Theres a runemaster I think its called where using certain elemental skills in certian orders lets you use a unique spell. Like fire fire cold would be a different spell than cold fire fire, and theres tons of combos for that class. I only know it from what ive seen others do, but for interesting a deep classes that may be the best example.