Every Electirc Lizalfos in the Gerudo Desert.
What about it?
Electric lizalfos tails are the worst thing to farm in this game so I though I should share this for anyone else. All the ones marked in this picture can be farmed by save scumming for a guaranteed drop. Its still tedious but better than only getting 1-2 from the entire desert after every blood moon. I recommend sneaking up behind them until you are close enough for a sneak attack before saving so you dont have to fight the same lizalfos six times before you get the drop. If they spot you just position yourself behind their starting position before saving so when you reload you are right behind them.
I did run into random spawns in the desert, but upon reloading they seem to disappear so its still good to have your sensor on. Hope this helps save a few people some time because farming 54 tails was awful and none of you deserve to go through that.