Frightfur Bear [NECH-EN046] Rare Noble Knights of the Round Table Box Set or leaves the field because

or leaves the field because of an opponent's card effect while its owner controls it: You can inflict 500 damage to your opponent for each "Frightfur" monster in your Graveyard

attach that target to this card as material

and controls at least as many monsters as you

You can only use this effect of "Revendread Slayer" once per turn

Frightfur Bear [NECH-EN046] Rare Noble Knights of the Round Table Box Set or leaves the field becauseSet: The New Challengers Card type: Fusion Effect Monster Rarity: Rare Attack: 2200 Defense: 1800 "Edge Imp Sabres" + "Fluffal Bear" When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can equip that monster to this card as an Equip Spell Card with this effect The equipped monster gains 1000 ATK.