Examples of cards that would work better/only work online
- Cards that count cards (eg Philosophers Stone, Alt VPs)
- Cards that use excessive "digging" and other time consuming mechanics
- Cards that use expansion exclusive mechanics that would be impractical/not worth physically including again (eg Ruins, Spoils, Potions, VP Chips, Coin Tokens, Adventures Tokens), especially ones that use many of them
- Cards where the rules would be widely disputed or misunderstood were it not for the online client guiding the player through the process
- Cards that would be unreasonable to keep track of without the assistance of the computer
- Cards that depend on information that not all the players are privy to.
etc.
Coming up with some quick examples (some are old ideas of mine) - please post your own however
Silk Merchant
Action - $2
+$1 for every 3 Victory Cards in your Deck, Hand and Discard Pile (rounded down)
Archer
Action - $6
Each player (including you) reveals cards from his deck until he reveals one costing $3 or more. He either discards it or puts it back (you choose)
+3 Cards
Dancer
Action - $2
+1 Card
Take a Coin Token
You may pay any number of coin tokens. +1 Action for each coin token you pay.
Fruit Market
Action - $2
+2 Actions
+1 Buy
Turn over your Journey token (it starts face up). If it's face up, +$1. If it's face down, +1 Card.
(I think a "low stakes" Journey token card would be very interesting, but it probably won't happen now)
Rubber Band
Treasure - $4
Worth $1, +$2 if you would not have won the game if it ended now.