Grim Parade
Supply
Shelters
Synergy
High (79)Engine 100%Trash-for-benefit 100%Attack-heavy 50%
Procession + Fortress — Procession + Fortress
Procession trashes the card it plays for a cost-plus-1 gain, but Fortress returns to your hand instead of being trashed — a free, repeatable gain engine.
Variety payoff + broad gainer/+Buy — Forager + Armory
Fairgrounds/Museum/Horn of Plenty want many differently-named cards; Workshops and +Buy make one-of shopping cheap.
Trasher + wants-to-be-trashed — Catacombs + Cultist
Fortress/Rats/Feodum/Squire-style cards want to be trashed repeatedly; trash-for-benefit cards are happy to oblige.