As far as Brilliant Stars goes, the Gold version of the Ultra Ball has a pull rate of just 1/500, give or take, as does the Gold Galarian Moltres
Two of these mechanics basically re-flavour things youd do in a normal game and then give them a fancy name, rewarding you for indulging in them
Commander Legends: Battle for Baldur's Gate leaned into a Dragon typal theme in blue, red, and green
Make the losing player banish the battling monster they control, face-down.
If Teval's Judgment's ability triggers more than three times in a turn, no mode can be chosen for any instances of the ability after the third, and those will be removed from the stack and do nothing
Japan would call these Ultra Rares (UR) while International sets would note these as Secret Rares XY era Fairy Type Introduced in the XY games, Fairy Type was also introduced into the TCG, but would discontinue by SwSh