The set's focus on multiplayer staples and commander-specific reprints justifies the premium price if you're serious about the format
This art depicts Giratina descending from a shadowy home as it rules over the Distortion Realm
This card with the tuner is again good, and with himself (If he can survive a turn) isn't bad either
Though the cards being in Japanese already restrict their usage for Western players, even if youre bilingual theres no chance of mixing the Western and Japanese cards to make a deck due to the big differences in their card backs
However, if you want a guideline for what kind of cards to look out for, it's good to refer to the Limited archetypes available
And the only Commander decks that are actively running Caretaker are Tovolar, Dire Overlord/Tovolar, the Midnight Scourge, and some Kyler, Sigardian Emissary decks