D/D/D Dragonbane King Beowulf

Level 8 DARK/Fiend Fusion Effect
3000 ATK / 2500 DEF

1 "D/D/D" monster + 1 "D/D" monster
If a "D/D" monster you control attacks a Defense Position monster, inflict piercing battle damage to your opponent. Once per turn, during your Standby Phase: You can destroy all cards in the Spell & Trap Zones.

Rulings – Yugipedia

Printings:

Pendulum Domination Structure Deck: SDPD-EN041 (Ultra Rare) - 2017-01-19

Prices:

Cardmarket: 0.28 €
TCGplayer: $ 0.35