Target 1 Tuner or 1 Level 7 or 8 Dragon Synchro Monster in your GY; Special Summon it in Defense Position, also for the rest of this turn after this card resolves, you cannot Special Summon from the Extra Deck, except Synchro Monsters.
If a Level 7 or 8 Dragon Synchro Monster(s) or "Crimson Dragon" you control would be destroyed by battle or card effect, you can banish this card from your GY instead.
You can only activate 1 "Synchro Rumble" per turn.
Spell
Normal
