Excalibur

"The legendary blade Excalibur stores the value of ores that are sacrificed to it and stacks it onto all new ores for a short time."

Overview
Excalibur is an Exotic tier furnace that was exclusive to May 2016 and was introduced in the Outdoors Update. This was another item created by a user xxBurgerEAxx. Unlike other furnaces in Miner's Haven, this does not multiply orevalue by a specific number.

Excalibur has a unique effect where it stacks orevalue from ore previously processed by the furnace. Its effect is complicated and it actually isn't useful without the ability to boost orevalue by multiplying its orevalue. Now you can buy Excalibur for uC at the masked man.