Although Calyrex only made its debut in the Galar region RPG, the Psychic-type is already massively popular due to being one of the Pokmon Sword and Shield's most powerful Legendaries due to its dual rider forms
And okay, sure, it comes in second place to Pokmon in terms of raw sales (because lets be real, Pokmon is a monster) , but Yu-Gi-Oh
A good example would be adding Drapion V [Lost Origin] into your Arceus VSTAR [Brilliant Stars] / Duraludon VMAX [Evolving Skies] deck to have a better matchup against a Mew VMAX [Fusion Strike] deck
X (last seen in 2009's Platinum Arceus expansion)
When x happens, draw a card seems to make up a large portion of many recent staples, and more and more legendary creatures with a built in card draw engine get printed and played, so having your opponents discard down to 6 instead of 7 can be a great way to slow down their game plan