I have a 12th level oracle of Pharasma using the Life mystery that was originally using a heavy crossbow with crossbow mastery. We are using the critical hit deck and a major NPC got the severed hand card. So now I no longer have a right hand. I am aware of the retrain rules and plan on using them, but if I choose to not use regeneration as a way to increase character development. What are my options with wielding a weapon and spellcasting?