To my surprise, this sentence I wrote in 2013 appears to still be true:
Hinterlands... is the only expansion to contain more than one Treasure, more than one Reaction, and more than one Victory card among its Kingdom cards.
To wit:
Base: 0 Treasure, 1 Reaction, 1 Victory
Intrigue: 1 Treasure, 1 Reaction, 4 Victory
Seaside: 0 Treasure, 0 Reaction, 1 Victory
Alchemy: 1 Treasure, 0 Reaction, 1 Victory
Prosperity: 8 Treasure, 1 Reaction, 0 Victory
Cornucopia: 1 Treasure, 1 Reaction, 1 Victory
Hinterlands: 3 Treasure, 3 Reaction, 3 Victory
Dark Ages: 1 Treasure, 2 Reaction, 2 Victory
Guilds: 1 Treasure, 0 Reaction, 0 Victory
Adventures: 3 Treasure, 1 Reaction, 1 Victory
Empires: 7 Treasure, 0 Reaction, 8 Victory (counting the Castles separately)
Nocturne: 1 Treasure, 1 Reaction, 1 Victory
Renaissance: 3 Treasure, 1 Reaction, 0 Victory
Menagerie: 2 Treasure, 5 Reaction, 0 Victory
...and even if we include non-Kingdom cards I think Dark Ages is the only other one to have more than one of each.
