Is there an easy way to track player-controlled resources, like spell slots, with cards or tokens? In DnD 5e parlance, something like giving each spellcaster 5 1st level slot and 3 2nd level slot cards/tokens after a long rest and letting them discard them when they cast a spell. I've been playing around with the deck of cards, but can't get it to do this. Any help appreciated, thx, J.