Kingdom included Royal Blacksmith, Watchtower, Fortress, Forum, Stables, Witch, Island, Charm, Banquet. Fun board! Stables makes up for no trashing. Banquet <3 Watchtower. Charm means Island+Fortress buys, Stables+Charm buys, etc.
Opponent's buys an early Silver, then a few turns in buys a couple of Royal Blacksmiths. They buy no other treasures.
Opponent plays RB, reveals hand, discards all the Coppers, now has a hand with one Silver and nothing much else. Can't buy Silver or other treasure. Keeps. On. Doing. This.
I say in the chat "With no way to get rid of Copper, those are hurting you." No response.
Please stop playing that card, man. Or buy a few more Silvers! Alas, no.