[MANTIS]Explosion pots should be usable while using holy light

[ProFF7]

Just found that if casting holy light and try to use a explosion potion, you get the message "You cant use a potion while paralyzed". I just tried at OSI and you can throw explo pots while casting holy light. didnt test conflagrations and supernovas, but they are probably usable too

[EntropicDeath]

Mantis 1160