Supporter

A Support hero stays in the back of the battle more often than not. They aren’t the ones who jumps into battle to fight, but rather stays behind and tries to assist the team during battles. Mages are usually classified as "support" heroes, with their plethora of spells.

One of the best Support heroes is the Shadow Priest. His ultimate can be cast on himself or an allied hero, which results in a lower death rate. This can be incredibly useful during pushes, if he casts the ultimate skill on a Tank/Carry hero who gets focused fired on a lot. He could have the time to run back to fountain and can potentially teleport or return back to battle with full health, especially if he has Boots of Travel!

On top of this, Shadow Priest also has a healing spell to aid his allies along with two other good spells. His Poison Touch deals damage along with slowing the enemy target and his Weave either adds armor to allies or depletes it for enemy heroes. He also has a healing spell that also damages surrounding enemies.

In Summary
Not a good head to head fighter and is very dependent on skills to outwit his enemy. Easily killed if not careful and is able to help ally heroes with auras and/or spells