liepard pokemon card V - SWSH06: Chilling Reign [ULTRA RARE] it cant attack during your opponents next turn. Liepard | Brilliant Stars |

While it costs a ton of mana, knowing your opponent is just a mana source or two away from killing you with a huge drain effect is stressful and changes the way you play the game, so simply the threat of being killed by Ribbons might be enough to make the card semi-playable

Then, the defending player can play Counter abilities on characters or events

Japanese sets seem to have a single gold VSTAR in the Secret Rare section, with this dazzling Arceus VSTAR being the one example of that in both Japan's Star Birth and the international Sword & Shield Brilliant Stars

Add on giving out the nice incidental lifegain and this is super powerful