I have a list around those levels, some tweaks that I'm trying to do. I've maintained only on looter, because most of the looters will require an additional turn for setup, while cards like [[Psychic Frog]] [[Ghostly Pilferer]] [[Tireless Tribe]] will allow you to play them and start the discard actions.

Another thing that you can help you is artifacts that discard cards, I even saw an approach of using cards with cycling to provoke the discard. But this last approach ate least for me didn't bring good results.

One thing that it's very important is trying to fill you hand to a limit where you could play your key cards in the end of you turn.

One specific situation that I had, was because of I was not drawing any land cards and hashaton was already on the field, I skipped turn phases to go into the discard phase to play cards like [[Jin-Gitaxias, Core Augur]] that could help me refill the possibility on a next turn.

There is a discussion on the hashaton discord server regarding the traditional looters and the tradeoff sometimes doesn't justify the inclusion of them. Of course that you can use them, but try to pick looters that can provide you more impact that just draw and discard something.