If you have "Mystical Space Typhoon" in your GY, or your opponent controls no Spells/Traps, you can Special Summon this card (from your hand).

If a "Radiant Typhoon" Quick-Play Spell Card or "Mystical Space Typhoon" is activated (except during the Damage Step): You can Special Summon 1 "Radiant Typhoon" monster from your Deck with a different name than the monsters you control, also you cannot Special Summon for the rest of this turn, except WIND monsters.