The Gate feels wrong from the beginning, but Leareth remains calm and finishes the casting. A modified Gate-spell that routes through several other planes, in order to avoid detection and cross shields, is bound to feel odd, and it's going to be very useful if he can get it working.
This time, it works. He can't actually see the destination, though, only a shimmering curtain. Checking his personal shielding a final time, he steps across–
–and this is definitely not where he meant to arrive, the cave with the supplies cache down south. Leareth staggers, trying to find his balance, as the light from the threshold behind him winks out.