Dyestorm

Dyestorm is a popular XvX sport in the The Kingdom of Excelsis, in which teams compete to reach 21 points first. Each team has a color of dye, and all of their attacks deal nonlethal damage, instead applying dye to the enemy. When someone is covered with dye, the enemy gets 1 point. Any non-damaging spells and abilities can be used, for example Wild Shape (your attacks still apply dye), enlarge/reduce (shrink an ally to stop them from getting hit, then they attack and hit an enemy), and twinned spell haste (make allies attack more). This game is a skill challenge, meaning that on top of making attack rolls, checks, or saves often, you dictate different/creative ways of doing actions, and doing this can have a variety of good effects. The enemy counters by doing the same thing, and play continues. You do use initiative.