The high templar in StarCraft II is a spell caster with no attack. It retains the Psionic Storm ability, which must be researched at the templar archives.
Psionic Storm deals 80 damage in the target area in small packets over 2.85 seconds, and hits both air and ground units. It injures friendly units caught in the area of effect of 1.5.[1]
Psionic storm is smartcast.
Psionic Storm is subject to a short delay before striking; during this brief period there is a visual indicator for where it will strike.