So, the base set has way fewer non-terminal Actions among its kingdom cards than any expansion except Prosperity (which makes up for its small number of non-terminal Actions with a large number of Treasures). Any idea why this is the case?
Prosperity: 26%
4 nonterminal, 12 terminal, 1 King's Court
Dominion: 27%
6 nonterminal, 18 terminal, 1 Throne Room
Hinterlands: 37.5%
6 nonterminal, 11 terminal, 3 variable
Seaside: 38%
10 nonterminal, 16 terminal
Intrigue: 41%
7 nonterminal, 11 terminal, 5 variable
Guilds: 42%
5 nonterminal, 7 terminal
Cornucopia: 45%
5 nonterminal, 6 terminal
…Maybe demote it to 42%, since Tournament can add terminals to your deck.
Dark Ages: 45%
13.2 nonterminal, 16.8 terminal, 2 variable, 1 Procession
Alchemy: 72%
6 nonterminal, 3 terminal, 1 Golem