[TF] recasting

[dmoore at caida.o. (D. Moore)]

> /def -ag -msimple -E{spellsystem} -t'^You lost your concentration while 
> trying to cast energy shield.' Energy_Shield_fail=\
>   /echo -aBCyellow %P1%;\
>   /test store_spell("c 'energy shield'")

This trigger isn't matching at all, since ^ is literal when you use
-msimple.