Predaplant Triantis (MP23-EN071) - 25th Anniversary Tin: Dueling Heroes Mega Pack 1st Edition

Pendulum Effect
While this card is in your Pendulum Zone, if you Fusion Summon a DARK Fusion Monster, you can also use cards in your Pendulum Zones as monsters on the field, as material for its Fusion Summon.
Monster Effect
If this card is sent to the GY or added to your Extra Deck face-up because it was used as Fusion Material: You can choose monsters on the field, up to the number of monsters you control, and place 1 Predator Counter on each one, and if you do, any of those monsters that are Level 2 or higher become Level 1 as long as they have a Predator Counter.