one piece booster box 09 Amazon.com: BANDAI Emperors in The New World OP-09 - Card Game 09 Emperors In The New World Configuration One Piece The Four Emperors

Whenever a Frog you control attacks, you mill cardsbut Grolnok "croaks" those cards into exile with a croak counter, allowing you to play them as if they were in your hand

It would have been nice to see some synergy between the two in Lorcana, but he's just a simple vanilla card

Random other "cast lots of spells" decks like Jori En, Ruin Diver might like it too

Untap effects like Thousand-Year Elixir, Seedborn Muse, and Tyvar, Jubilant Brawler turn the Night Witch into an engine by letting you activate it multiple times a turn cycle, plus all that sacrificing pairs well with Midnight Reaper

Trystans Command Finally, we have Trystans Command, a massive Kindred Sorcery that serves as a perfect finisher for Elf decks