"GM, I'm naked, unarmed, out of spells, and those ghouls just won't stop coming! I know it's a bad idea, dearest Gaia, I think in desperation, but I don't have any other choice, do I? And then I pick up a dropped metal shield and a sword and brace for the next attack."
"You sure?"
"I'm not happy about it, but... yes."
"Okay, then. You feel a bit nauseous, and then both the shield and sword corrode and fall from your hands! Then the hair on your neck prickles and a whisper comes into your mind, Never doubt me again, small one!