The AI does not seem to complete actions involving the Tournament card. It does not buy a Prize with a Province in hand (see below). It also does not seem to reveal Provinces to inhibit other player's Tournament plays. In general, it fails to reveal Provinces. (It also tends to buy too many Tournaments which is a different issue.)
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Turn 17 - Revenge Witch
R draws 2 Coppers, 2 Provinces and a Tournament.
.
.
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Turn 18 - Revenge Witch
R plays a Tournament.
R draws a Wild Hunt.
R plays a Wild Hunt.
R draws a Copper and 2 Tournaments.
R plays 3 Coppers.
R buys and gains a Silver.
R draws 2 Coppers, a Province and 2 Tournaments.
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No cards were discarded or trashed previously before Turn 18 by Revenge Witch. It also discarded the Province following Turn 18 nullifying the power of the Tournament cards.
The bot can be a bit obtuse. It is not really competitive and is best with some BM enabler on board.
This going beyond being "obtuse." The AI should follow the exact instructions on the card.
How do you get a BM ("big money?") enabler here?
It does follow the exact instructions, it makes very bad choices however (adding this to the list)