Quote Originally Posted by JNAProductions View Post
That sounds like it COULD be hostile DMing... Or a change of pace, to encourage different tactics from the party.
The fact that the player has warning of this makes me believe it could easily be the latter.
Yes, entirely possible. But I have known DMs who very much bought into the vs players mentality, who delighted in taking away anything and everything the players tried to build up during the game. I suppose some players might enjoy that kind of challenge. I, myself, just find it frustrating.

If the DM is just trying to get you to think outside the box a little with his warning, then great, do what you can to counter his dastardly plans.
If he is messing with you for the sake of messing with you and has no intention of letting you succeed, you might need to take a step back and consider your place at his table...