In fact, the only new weapons mentioned are an SMG and shotgun from the current seasonal set, plus a reprised version of the Gridskipper pulse rifle. If all Tomb of the Elders has is those plus ...
Tonics branch off of each other, starting with uncommon, moving to rare, and then to Legendary. There are two Exotic Tonics you can craft, but you unlock the ability to do so by collecting the ...