after a quick search for the word “token” in the pdf, it looks like you only ever place tokens on the ace of hearts, but if you draw the ace of spades you can remove a token from the ace of hearts. I think the “place or remove tokens from cards” is just because “card” would sound funny & that the game is still intuitive & easy to understand. You just don’t add tokens until you pull the ace of hearts & the prompt explains what to do rather than it being in the rule’s section, so I think playing the game & not just reading the rules makes everything clear.