pokemon black bolt white flare booster box TCG Scarlet & Violet 10.5 Elite Trainer : Toys & Games Each pack contains 35 cards Expansion Overview | Pokémon TCG:

The biggest draw to the card in this context is that, when you have a card-draw engine online and all you care about is buying time to draw more cards, then Unsubstantiate helps you get around the problem of drawing the wrong counterspell

Legacy of the Duelist Released December 7, 2016 Its not surprising for a game like Yu-Gi-Oh

This means that it can trigger both your Dark Worlds and Dangers, also if your opponent negates it, you did not just discard as a cost for no reason

While other cards can do this, it's the fact Arcum's Astrolabe only costs one mana from any snow land to cost that makes it so powerful it had to be banned across multiple formats.