Instant Fusion [OP04-EN002] Ultimate Rare Synchro/Effect Monster 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

You must Tribute 3 monsters to Normal Summon (cannot Set this card)

change the Battle Position of this card to Attack Position at the end of the Damage Step

"Right Arm of the Forbidden One" and "Left Arm of the Forbidden One" in addition to this card in your hand

Instant Fusion [OP04-EN002] Ultimate Rare Synchro/Effect Monster or leaves the field becauseSet: OTS Tournament Pack 4 Card type: Normal Spell Rarity: Ultimate Rare Pay 1000 LP; Special Summon 1 Level 5 or lower Fusion Monster from your Extra Deck, but it cannot attack, also is destroyed during the End Phase. (This Special Summon is treated as a Fusion Summon.) You can only activate 1 "Instant Fusion" per turn.