The mechanic was created by Aaron Forsythe, and was reintroduced in Future Sight and Modern Horizons
Also, when they transform into Hollowhenge Huntmaster, they become a 6/6 that gives all of your permanents hexproof, and then also puts two +1/+1 counters on all of your creatures in your combat step
As for the Power reduction, it can make it can put certain characters in range for your Characters with KO removals
The cards are powerful but not overpowered, and Trainer's Pokmon are a fun way to advance the game and end the Scarlet & Violet era with a bang, If you can get your hands on this new set, definitely crack open some cards and let your nostalgia run wild
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