Chancellor, Thief, Adventurer, maybe Chapel (though it's hard to imagine dominion without it), Feast, Council Room (Soothsayer and Governor cover everything it does and it's not good or that interesting), Woodcutter, maybe Spy
Scout, Wishing Well, Saboteur, maybe Shanty Town
Treasure Map, Pearl Diver, maybe Navigator
Transmute, Possession
Goons, Royal Seal, maybe KC (I love it but it's kind of broken like rebuild and a pain in irl games. I wish it just said "reveal an action other than a kings court". You could still do crazy things with both it and throne room, just not in every game)
Maybe Tournament
IGG, maybe Duchess
Rebuild, Maybe Vagrant (it's much better than pearl diver but it's designed to be a nothing card)
Stash, Walled Village, maybe Envoy