yu gi oh alliance insight booster box Yu-Gi-Oh! TCG: Key Features Official 1st Edition sealed booster box of Alliance Insight Includes 101 Yu-Gi-Oh! 1x Alliance Insight Booster

Now you can survive

The key is to focus on cards where collectors want the card specifically, not just cards that are currently expensive because of gameplay

In the case of this card, is was awarded as a prize at Disney Lorcana Challenge tournament events, which means that its very rare, and very valuable

However, you only get one (Easy in White 2 and Challenge in Black 2 ) and you only get it after you beat the Champion

You can only use each of the following effects of Darkest Diabolos, Lord of the Lair once per turn

While its not as necessary as something like Strong Energy, it does have its place in Psychic decks