Teth's Wonderous Wheelbarrow

When cast, the wheelbarrow will animate and follow the caster until dismissed; the wheelbarrow is immune to all damage and effects of any variety.  The wheelbarrow can not enter any structure and will wait outside any structure the caster enters.  The wheelbarrow will appear, as if teleported, within 5ft of the caster when the caster exits any structure.

Any mindless unconscious creature you designate can be placed in the extradimensional plane created within the wheelbarrow.  Whilst in the extradimensional plane the creature is immune to all damage and effects of any variety.  

Should the mindless unconscious creature awaken or gain thought, they are immediately expelled from the extradimensional plane and appear, as if teleported, within 5ft of the caster.