Astral Fist(ing)

A large deep blue portal appears where ever the caster wants (in 30ft) as long as they can see the location. A large, galaxy blue fist (with white spoltches) comes through the portal, and the caster takes control over the hand. it's a 10ft range, and does (2d10) damage. The issue being, the caster can't speak while the fist is active, and the casters body is treated as if grappled.

This spell lasts 5 turns no matter what.