Issue Description:

Rituals can be infused, so why not Sigils?

Suggestion:

Logical streamlining of the upgrades. For example:

• Raw decreases cost/gives logical functionality/increases duration (for example: Water and Lava Sigil consistent with Rituals (need Raw upgrade to be able to insert into tanks))
• Destructive increases area/power of the effect
• Vengeful increases frequency/??
• Corrosive gives interesting functionality/extra effects (for example: Water Sigil -> Ice, Lava Sigil -> Obsidian?)

Suggestion label.