You can Special Summon this card (from your hand or GY) by Tributing 1 monster on either player's field with a Predator Counter. You can only Special Summon "Predaplant Drosophyllum Hydra" once per turn this way. If this card is on the field or in your GY (Quick Effect): You can banish 1 other "Predaplant" monster from your GY, then target 1 face-up monster on the field; it loses 500 ATK. You can only use this effect of "Predaplant Drosophyllum Hydra" once per turn.