Tengu format ruling
Turbo Booster
Card effect (current official text)If you have Normal Summoned a monster this turn, you can Special Summon this card from your hand. You can Tribute this card to destroy 1 monster your opponent controls that battled one of your monsters this turn.
Rulings
- Turbo Booster can only be Special Summoned by its effect during your own Main Phases.
- Turbo Booster's second effect is an Ignition Effect that you can activate during your Main Phase 2. Tributing Turbo Booster is a cost. This effect targets your opponent's monster.
- If you Special Summon Turbo Booster during your Main Phase 2 you can still activate its second effect.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.