Changing physical damage calculations?

For efficiency's sake, the latter seven bytes of the Magicite code block are re-used by the Tempest function. You can get rid of the JSR (and the branch right before it), but if you don't save the spell number (STA $3400) then nothing will be cast when the actual effect goes off. I'm not entirely clear of the purpose of INC $3A70 (probably has something to do with ending the actual attack sequence), but I'd leave that alone as well.