Why do tanks and healers use a destruction staff in ESO?

If you are a newer player in the Elder Scrolls Online (ESO), you might have wondered why it's common for support roles (tanks and healers) to run a Destruction Staff. This weapon actually has a couple of skills that are very useful for supporting your team, something which is at the core of what tanks and healers do in this game. So in this article we will summarize what these skills are and why they are useful. 

Elemental Drain for support roles in ESO

Elemental Blockade for support roles in ESO

Crushing Shock for support roles in ESO