Would black tentacles be able to grapple a character within the area of effect who is invisible? A RAW reading of the spell would indicate yes ("apply the result to all creatures in the area of effect."), but reasoning is lacking. As the GM, my call was yes, it would affect that PC even though he was invisible. My reasoning was that the tentacles posess some form of tremorsense although it is not explicitly mentioned. Thoughts? Comments? Flames?