Energy cards for Standard Mode decks

When you create a deck and use energy cards, they convert the deck from standard to unlimited and expanded modes.

Thanks for the report, I rolled out another check for this.

If it still occurs, can you replicate your steps for me?

1. Go to deckbuilder. Add x, y or z card.
2. etc etc

Thanks!

I'm encountering a similar issue for the card ultra ball, where old printings will mark the deck as unlimited, but the most recent printing will allow the deck to be marked as standard format.