Once per turn, when a monster is destroyed by battle involving your FIRE Dragon monster: You can target 1 of those destroyed monsters; Special Summon it to your field in Defense Position. During your opponent's End Phase: You can pay 1000 LP, then target 1 "Sangen" Spell/Trap in your GY; Set it, but banish it when it leaves the field. You can only use this effect of "Sangen Furo" once per turn.