prb-01 japanese booster box One Piece: The Best Vol. 1 (PRB-01) and there are even some rare parallel edition DON One Piece PRB01 Japanese Booster

Cabal Coffers, Maze of Ith, Dark Depths, Glacial Chasm, Ghost Quarter, Kor Haven, Inventors Fair all of them turn into rainbow lands that cant do anything else when Toxicrene hits the field

Walls of the Imperial Tomb provides the archetype with more consistency, allowing you to search any horus monster at the cost of card advantage

7 Right Arm Of The Forbidden One Starlight Rare $105.64 A Good Right Hook Right Arm of the Forbidden One is the other piece that was released in the Battles of Legend: Crystal Revenge set as a starlight rare

Since drawing happens before discarding, you will have at least one card to discard after the draw portion of connive resolves