You wont see it that often anymore, as the meta has shaped in a way where Palkia VSTAR is not the most popular deck anymore
Arven Name: Arven Year of release and Regulation Mark: 2023, Regulation Mark: G Set: Scarlet & Violet Base Set The Mabostiff trainer, Arven, is well-loved, and his ability is indispensable in decks that need to find certain cards fast
The main thing that holds it back from being higher on the list is that it doesnt necessarily end the game itself
In this case, nature itself
Both Teysa, Envoy of Ghosts and Darien, King of Kjeldor work as rattlesnake cards that punish people for attacking you
Its also worth noting that Kaalia only needs to attack to get the effect (not deal damage) so its not hard to trigger, plus the creature she drops into play also come in attacking, which can easily end the game on the spot