Ok, what if Spiral Knights had mana? You could have a whole new bar for mana and cast cool spells to inflict statues effects and rain havoc on your enemies!
1.Come up with spell
2.Damage and Effects and what it does.
3.How much mana would it cost?

E.G.
1.Purple Thunder Spell
Deals low dmg but targets all enemies in a 10 meter radius. Spreads across and can deal dmg multiple times. Has a 10% chance to cause shock unless it links to another enemy, increasing shock chance for both targets by 10%. If there is more then one enemy in radius, lightning will bounce back and forth time over time, rapidly increasing damage and shock chance.