The best adblocker on Firefox ever and works awesome from almost 20 years!!
Very customizable, has pre-built online lists of filters that can be added and you can manually block most elements in any pages!
******
The only 2 missing features to make it "the one that rule them all" for me:
A settings backup that can be sync online between various gadgets, or to be saved away and easily re-applied on a fresh installed device,
and the second one: a clearly explained internal list of rules to be easily applied on manual element blocks!
Imagine a small drop-down that offers you all the available filters that can be applied to an element and let you choose which one you gonna apply on a link or whatever!