I probably dont need to explain why discarding cards to draw cards is the best way to take advantage of whenever you discard triggers, but Id argue its so good and central to the plan that you should basically consider whenever you draw effects to belong in the discard archetype as well
Kozilek, the Great Distortion
Donald Duck, Buccaneer loves making characters walk the plank
Each Collector Booster is guaranteed to have 1 of the 10 in traditional foil
Loam keeps putting lands from your graveyard into your hand (think fetches, utility stuff, premium duals), and dredge keeps it coming back
It was a genuine coin-flip moment trying to figure out whether Whispers in the Well would overtake The First Chapter as the best Lorcana set, but ultimately, the OG set just has too much of a legacy and is where it all started for this now established TCG