[z2645] Minor Deadmines improvements

Changes:
* Some spell improvements to Mr Smite
* Improve Canon&Door event's timing

Signed-off-by: Schmoozerd <schmoozerd@scriptdev2.com>

(based on commit cd8be63)

Signed-off-by: Xfurry <xfurry@scriptdev2.com>

(based on commit SD2-TBC[s2693] - 47c3063)

Signed-off-by: Xfurry <xfurry@scriptdev2.com>