Your role in the group as a damage-focused player (DPS) is to damage a group of mobs as much as possible, unless the raid leader asks you to focus on a specific target.

The main source of your damage is the continuous use of the «Ice Shard (Q)» ability. 

In addition, you have the option to use the abilities «Ice Bomb (W)» or «Ice Nova (W)». «Ice Bomb (W)» deals more damage, however, «Ice Nova (W)» can help you escape in case of a failed pool or prevent attacks by Avalon spearmen, which can save your raid. 

Note: Always use «Ice Bomb (W)», and «Ice Nova (W)» almost never use unless RL asks you to do the opposite. 

In addition, you have the «Unquenchable Power (R)» ability, which allows you to receive a significant increase in damage in battle. Try to use this ability as efficiently as possible to maximize your DPS.