So, the natural question is, granting that Soothsayer is usually but not always a little better than it, how good is TGG? My inclination is to believe that TGG is terrible, e.g. in the bottom half of 5 cost cards for sure.
I could be way off here but TGG feels comparable to Explorer in run-of-the-mill BM. Pro vs Explorer: Always get gold instead of Silver. Con: No immediate benefit. I think maybe I'd want TGG early in the game but Explorer later? But if there's a decent engine available I probably don't look too hard at either one.
Yeah, I'd also compare this to Explorer.
One Soothsayer (without support) will probably never deals more than 5 curses in the whole game. Double Soothsayer might deal 7 or 8, if it is not contested. Any other curser, even the worst ones, will deal curses quicker and thus Soothsayer would deal even less curses.
Plus, there are more kingdom cards than just those two.
- With any kind of sifting, I'm pretty sure Soothsayer beats TGG, because then you could deal all the curses. Exception might be Stables as Soothsayer gives the other player a pretty good chance to hit $5 on his 3rd or 4th turn while the Soothsayer player will probably miss $5 before his second shuffle.
- Any reasonable trashing would be fine for TGG. Chapel, Steward, Remake, Junk Dealer and Upgrade, even Trader and Watchtower will all be fine enough to overcome the cursing. (That's only a claim, though)
- Any engine potential would be nice for TGG (but why would you buy TGG then?)
- Any other curser will outplay Soothsayer.
- In the end game of an engine mirror where both players can draw their whole deck reliably, Soothsayer would be far better than TGG - if there are still curses to be dealt.
So, I think, both cards would have strengths and weaknesses.