Black Garden
If a monster(s) is Normal or Special Summoned face-up, except by the effect of "Black Garden": Halve its ATK, then, the controller of that monster Special Summons 1 "Rose Token" (Plant/DARK/Level 2/ATK 800/DEF 800) to their opponent's field in Attack Position. (This ATK loss remains even if this card leaves the field.) You can target 1 monster in your GY with ATK equal to the total ATK of all Plant monsters on the field; destroy this card and as many Plant monsters on the field as possible, then, if you destroyed all of them, Special Summon that targeted monster.