Archfiend of Gilfer is a Common Effect Monster card from Yu-Gi-Oh! (Speed Duel: Battle City Box, SBCB). Current market price: $0.11.
Common
Speed Duel: Battle City Box (SBCB)
Card Text
When this card is sent to the Graveyard: You can target 1 face-up monster on the field; equip that target with this card. That monster loses 500 ATK while equipped with this card.
