When one of your items runs out of Ammo, gain 10 » 20 » 30 Regen for the fight.

When you gain Burn, gain 2 » 4 » 8 Regen for this fight.

The first time you fall below half Health each fight, gain 1 » 2 times your Regen for the fight.

You have 2 » 4 » 6 Regen for each non-Weapon item you have.

When you Burn, gain 2 » 4 » 6 » 8 Regen for the fight.

You have Regen equal to half the Burn on your enemy.

When you Over-Heal, gain 5 » 10 » 15 Regen for the fight.

When you Poison, gain 2 » 4 » 6 » 8 Regen for the fight.

You have 10 » 20 » 30 Regen.

When you use a small item, gain 1 » 2 » 3 » 4 Regen for the fight.