In response to the topic in the ATM forum: Here is the text of the card from the oracle: "Pokémon Nurse Trainer card Supporter You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card. Remove all damage counters from 1 of your Pokémon. Then discard all Energy cards attached to it, if any." Based on the text of the card, I'd say you can still use it just to discard energy. Contrast that to Pokemon Center's text, again from the oracle: "Pokémon Center Trainer card Remove all damage counters from all of your own Pokémon with damage counters on them, then discard all Energy cards attached to those Pokémon." The card is worded somewhat differently. The first sentence restricts the scope of the card to pokemon with damage, and that restriction carries forward.