I'm a wizard and I like everything to go my way. Recently we ran into a situation on a boat in which we were attacked by a trio of Water Elementals.
I thought this was a fine time to test out the new Bigby's Hand. I put it between myself and a water elemental after it attacked me, using the Interposing effect. The relevant text of the spell is:
The target can’t move through the hand’s space if its Strength score is less than or equal to the hand’s Strength score.
Water Elementals have a strength of 18 while Bigby's Hand has a strength score of 26.
However, my DM argued that since a Water Elemental can flow through spaces an inch wide, it was not restricted by my Hand at all.
Is my DM right? Can a Water Elemental move through Bigby's Interposing Hand?
What say ye?