union arena booster box Arknights Vol.2 [EX11BT] Begin your journey now! Union Arena Card Game Goddess

Target 1 monster that was destroyed by battle and sent to your GY this turn

Kitchen and home decor etc

The full list is available below, as you can see, the main deck has 40 cards

choose 1 "Dream Mirror" monster from your Deck with a different Level than the Tributed monster, add 1 "Dream Mirror of Joy" or 1 "Dream Mirror of Terror" from your Deck to your hand that is mentioned on that chosen monster, and Special Summon that chosen monster in Defense Position

Grolnok, the Omnivore Magic has enough cards and mechanics that work from the graveyard to make self-milling a reward unto itself but I wont object to a mill engine that throws in something extra to sweeten the deal