Groovy Decay
Supply
Shelters
Synergy
High (75)Engine 100%Trash-for-benefit 100%Attack-heavy 75%
Rats + trash-for-benefit — Rats + Ratcatcher
Rats converts junk into an endless stream of $4-cost trash fodder for Bishop/Apprentice/Salvager/Death Cart, and draws a card when trashed itself.
Trasher + wants-to-be-trashed — Ratcatcher + Cultist
Fortress/Rats/Feodum/Squire-style cards want to be trashed repeatedly; trash-for-benefit cards are happy to oblige.