Facts about items you might not know

<Infrared Lenses>
Burning enemies also take 20% more damage from the burn itself.

<Silver Lighter>
The burn itself also gives you 20% more ult charge.

<Eye of the Spider>
The 10% damage boost applies to all forms of damage, and not just weapon damage.

<Codebreaker>
Armor damage reductions gets calculated after damage boosts. This means that as your Weapon Power increases the value from ignoring half the armor starts to decrease significantly.
Beam weapons always have a flat % reduction though. So this item always slashes that from 30% to 15% no matter your Weapon Power.
This item is basically only valuable for beams and shotguns. There is absolutely no reason to ever pick this item for anything else (You'll make me cry if you do).

<Crusader Hydraulics>

Armor that is underneath Shield Health or Overhealth still gives you this 10% reduction. A hero that naturally has a lot of shield health will get a lot of benefit from this item alone.