Warden - blue (tank)

Using 3 main skills, Red (instant damage/spear), Yellow (bleed/Fist) and Green (defensive/Shield) to create combos. Small combo into medium combo into large 4-5 R/Y/G combos for larger than its sum attacks and effects. 

Blue warden uses the above system to boost its defensive status as the tank. While still remaining mobile as opposed to other tanks. It starts out weaker, but can get higher then the others. This complexity is its greatest strength and downside. Easy to play, hard to master. And quick to get messed up by lag or unforeseen situations.

Wardens are a main class and wonder machines if played well. Others may want to try the easier classes.