During the Main or Battle Phase: Immediately after this effect resolves, Normal Summon 1 Level 10 monster, or, if you control "Queen's Knight", "King's Knight", and "Jack's Knight", you can apply this effect instead.
• Add 1 Level 10 non-DARK monster with ? ATK from your Deck to your hand, then, immediately after this effect resolves, you can Normal Summon 1 Level 10 monster.
You can only activate 1 "Thunderspeed Summon" per turn.