How do I use basic energy cards in discard pile that have blue arrow underneath them?

Felled47_pkmn · December 2023

In my discard pile, I had 2 basic dark energy cards that had a blue glowing arrow beneath them, prompting me to use them, but I couldn’t figure out how.

Califlaur · December 2023

This is a bug, I haven't seen it in a long time though. It's because there are other cards in the game like Grant that you can select from the discard. If this happens just restart your game.