Your leftmost Ammo item has +1 » +2 » +3 » +4 Max Ammo.

If you have exactly one Weapon, it has +5 » +10 Max Ammo.

...if it is also Aquatic, it has +25 » +50 Damage.

The first 3 » 6 times you Crit each fight, Reload another item.

Your items have +1 » +2 » +3 Max Ammo.

The first 4 » 8 » 12 times you use an Ammo item each fight, Burn 5.

The first 3 » 6 times you Freeze each fight, Reload another item.

When you use an Ammo item, Reload the item to the left of it 1 » 2 » 3 Ammo.

Your Weapons have +1 » +2 » +3 Damage for each Ammo on your items.

Your leftmost Ammo Weapon has double Damage and +1 Max Ammo.

The first time you fall below 50% Health each fight, Reload 1 » 2 » 3 » 4 item(s) and Charge 1 » 2 » 3 » 4 Ammo items 1 second.