One of the most frequent barely-civil discussions in my group is what is possible when you use Throne Room (repeat an action card), in conjunction with Mine (trash a treasure to gain a treasure with cost of three greater).
In my experience, one of two things happen:
- The person trashes two copper to gain two silver - completely valid
- The person trashes one copper to gain a gold - under debate
Is it legal to gain a gold from a copper with a Throne Room-ed Mine?