Survivor Cube

The Survivor Cube is a Accessory, which makes all Healing sources  more effective on the wielder. It cannot be crafted, and instead it is given upon reaching by Maddox the Slayer. It is important to note that the user must have to gain its effects. This appears to be the only accessory given on reaching a Slayer level.

It is very similar to the Healing Talisman/Ring in its effect. In total, the combined healing boost from the Healing Ring and Survivor Cube is. The Plasmaflux Power Orb grants healing boost and the combined effect of all the above is  (All the effects of the above can be doubled by the Zombie's Heart and its Subsequent Upgrades, like the Crystallized Heart).