Mad Hatter
Event
$3
Place your Action or Treasure token on any Supply pile
The Action and Treasure tokens add those types to the pile they're placed on. So, the Treasure token works like a mini-Capitalism, only affecting a single card (but at the same time not restricted to those with +$). The tokens can be placed on
any supply pile. Technically, you could even put them on cards that already have those types, but they wouldn't do anything in that case
Like Capitalism, the tokens do not change what the cards do, only when they can be played. You can put them on Curses or pure Victory cards, but it would rarely be useful to do so - playing a Curse or Victory card has no effect other than to put the card in play and. if played during the Action phase, using up an Action. However, it can sometimes be useful if there are cards that interact with those types. E.g., placing the Treasure token on Curses would allow cards like Spice Merchant to trash them
In most kingdoms, the Action token wouldn't see much use, but there are some nice combos. Placing it on, say, Duchy would allow you to use Advance to turn any other Action card into a Duchy, or placing it on Curse could allow you to use Advance to turn Curses into Action cards. Where it would really shine is in games with Ways. A card with the Action token works just like any other Action card and can therefore use the Way. Way of the Horse with the Action token on Copper or Curse, for example, would effectively let you gain Horses for free with any extra buys, and would make Cursers useless. Some Night cards would also benefit from the Action token