If a monster(s) is Special Summoned: Special Summon 1 Level 7 or lower Fusion Monster from your Extra Deck that is "Flame Swordsman" or mentions it, then you can change 1 face-up monster on the field to face-down Defense Position.
During your opponent's Battle Phase: You can banish this card from your GY and Tribute 1 face-down Defense Position monster, Special Summon 1 "Flame Swordsman" or 1 monster than mentions it from your Deck or Extra Deck.
You can only use this effect of "Flame Swordsdance" once per turn.
Trap
Normal