Wet

Wet is debuff, that stacking up to 1000 times

Target losing 1 stack every 0.02 seconds (1000 stacks = 20 sec)

Movement speed decreased by 0.05% per stack (1000 stacks = 50% slow)

Increasing lightning damage by 0.1% per stack (1000 stacks = 100% more damage)

Fire and frost debuffs interaction
Applying Wet on target with Ice applying 20% of Wet stacks to Ice instead

Applying Ice on Wet target removing all Wet stacks and convers 20% of them to Ice

Applying Wet renews Burning to 5 seconds and reducing the Burning damage by 5 per stack applied

Wet target cant burn, removing 1 Wet for every 5 Burning applied, but reducing Burning for 5 damage per stack removed

Elementalist is very skilled in elemental magic and can apply Burning with Wet, Cold and Ice at the same time, without losing any stacks.