dtgreene: I cast Ultima 5 (NES version) on the next user.
TwoHandedSword: I intercept it with my Avatar.
Actually, you fail to intercept it because you tried to do it on one of the 5 frames per second (60 FPS), and the game ate your input as a result. Or, perhaps you were unable to do that because you ran out of MP, and there's no way to regain your MP except by dying and being brought back to life at Lord British's castle (at least i *think* that's where you respawn, though I could be wrong here). (No, resting won't restore your MP; if you're under the illusion it does, you've played the wrong version.)
(Don't feel like responding to the spell you cast right now, and don't feel like casting a new one, so that spell you cast still stands.)