While sulking to myself about my underappreciated contest entry
I came up with a completely different Potion-cost card idea:
Fountain of Youth - Action/Duration - $3P ?
+1 Card, +1 Action.
While this is in play, at the start of every turn:
Put a coin token on this card. Choose one: +1 Card, or +1 Action.
-
At the beginning of your buy phase, if this is in play, you may trash it. If you do: +$P, +1 Buy. Return the coin tokens from this card to the supply; +$1 for each coin token returned.
* The Potion makes the water in the fountain all magical and stuff when you buy it.
* People throw coins into fountains. When you take the fountain apart, you harvest those, and reclaim the potion.
I'm not sure I like that, as written, it could be trashed on the turn it's played, without ever sitting out. But I don't see a good wording to prevent that, and maybe it's fine.