Balance tweak; passive mana beyond 6 no longer spills into other mana types, but instead heals the player directly.

In brief, the previous system felt like walking a tight-rope where you had to cast the same spell every-time and not mess up. In contrast the new system encourages players to switch which spells they're using and doesn't penalize them too harshly for messing up.

The differences between the two systems are as follows:

• Firing spells at lower power more often
  • In the previous system, it was easy to leave 3 spells at full power and use the spill-over passive mana to fire the 4th spell at full power every couple of rolls.
  • This lead to a dominant strategy of firing Yellow or Green spells every time. Pretty boring...
• Healing occurs more often, but is slower and depends on die rolls.
  
  • In the previous system, you could only heal when all mana types were at full power, meaning it only occurred during downtime between waves.
  • In this system, you can leave a single spell at full power and get some healing, but healing may not occur every roll depending on the spells selected.
• Accidentally firing the wrong spell is no longer a run-ending mistake
  • In the previous system, accidentally firing a spell you were purposely leaving at full power means that your mana gain rate fell (no spill over) and you were even further from healing.
  • If this happened during a wave, your run was basically over :(