Lamentations
Supply
Shelters
Synergy
Medium (73)Trash-for-benefit 95%Engine 80%Slog 40%
Copper flood + Copper payoff — Beggar + Apothecary
Mass-Copper-gainers (Beggar/Cache/Banquet) feed cards that convert Copper density into draw/coin/VP (Counting House/Miser/Coppersmith/Fountain/Silos).
Variety payoff + broad gainer/+Buy — Forager + Catacombs
Fairgrounds/Museum/Horn of Plenty want many differently-named cards; Workshops and +Buy make one-of shopping cheap.
Multiple Potion-cost piles — Apothecary + Golem
A single Potion purchase amortizes across piles — a lone Potion-cost card is a cost, two or more is a plan.
Trasher + wants-to-be-trashed — Counterfeit + Catacombs
Fortress/Rats/Feodum/Squire-style cards want to be trashed repeatedly; trash-for-benefit cards are happy to oblige.