Throne and Liberty Gear Upgrades
The upgrade of gear can increase its stats base and often enhances its extras. The value of these upgrades is determined by their tiers, requirements, and the amount of random augmentations applied.
The racial Shield elite Razortail For instance, it is often upgraded to increase its lightning absorption capabilities in PvP and/or provide additional defenses to missile-based build in the PvM. This makes it more exchangeable than the non-upgraded perfect version.
Reroll Tokens
Reroll tokens are a way to reroll an acquired item upgrade like armor, weapon, or ring. The item upgrade (Click Link) is replaced by another of the same kind and comes with different benefits. Reroll tokens are a cost-effective option to upgrade equipment. However, they don't keep the same level as the original item upgrader mod and any resources that are wasted will not be refunded.
The survivors can acquire reroll tokens through several means such as the Mistery Box or as rare drops from skulled creatures.