When the 4 charges are used, is the card discarded or can 4 more charges be added and used and so on 'forever'?

https://arkhamdb.com/card/01060

Thanks

https://arkhamdb.com/card/01070

Neither. It stays in the slot empty until you play an arcane asset to replace it. At the moment, the only way to recharge a spell card is Book of Shadows. https://arkhamdb.com/card/01070

This seems a bit weird, but consider, instead, a .45 Automatic that's run out of bullets. That continues to sit in your hand slot. If you draw a treachery that forces you to discard an asset, you can discard the empty gun, thus not losing much. Or, you might draw something like Extra Ammunication, and reload it. Or you could replace it with a machete...

thanks

Cards that are discarded when they run out of "charges" will say so on the card.

https://arkhamdb.com/card/01071