Tengu format ruling
Star Blast
Card effect (current official text)Pay any number of Life Points in multiples of 500; reduce the Level of 1 monster you control or that is in your hand by 1 for each 500 Life Points you paid, until the End Phase.
Rulings
- "Star Blast" does not target.
- When its effect resolves, choose a monster on the field or in your hand.
- Paying Life Points is a cost. "Star Blast" cannot be activated while "Spell Economics" is on the field, since you cannot pay costs.
- If you use "Star Blast" on a monster in your hand and then Set that monster, its Level is still reduced and will be reduced when it is flipped face-up.
- If you activate "Star Blast" but have no monsters to use it on when its effect resolves, your opponent can look at your hand to confirm that you have no monsters in your hand.
- You cannot reduce a monster’s Level below 1 and you cannot over-pay for "Star Blast".
- You cannot select a Level 1 monster for "Star Blast".
- If you paid 1000 Life Points, you cannot select a Level 2 monster, etc.
- If you had an appropriate monster to use "Star Blast" on, paid the Life Points, but no longer have an appropriate monster when "Star Blast" resolves, its effect disappears.
- The maximum Life Points you can pay for "Star Blast" is based on the maximum Level of legal choices you have available at the time. You cannot over-pay.
- If "Majestic Mech – Ohka" has its Level reduced to 4 or lower with "Star Blast", and it is Summoned without Tribute because it is now a Level 4 or lower monster, its effect to send itself to the GY does not activate.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.