Omens Dragons get their own special mechanic to go along with them called omens
When he enters or attacks, you can sacrifice another creature you control and draw a card
This set barely flirted with the $130 mark during the early portion of 2024, but slowly began moving up in the latter stages of 2024, culminating in a giant leap toward the upper end of the $100s in 2025
That's around 35 booster boxes, before you find even potentially find a single one of these cards
Japanese printings are in Japanese to make it easier to search for the cameos, since I cant remember the exact wording discrepancies for the translations half the time (oops)
The name of the game for these commanders is to control the board, benefit from graveyard synergies, and slowly dwindle your opponents decks