battle styles booster box pull rates Pull Rates in Sun & Moon - Sword & Shield Sets - Page 4 Mega Evolution Pull Rates :

What's the Deal with the Sideboard

you cannot Special Summon monsters from the Extra Deck for the rest of this turn, also Special Summon this card, and if you do, change that monster to face-down Defense Position

Just needs too much setup to be viable, notes u/DeathByChainsaw in the reveal thread

"Unicorn Gundam (Unicorn Mode)", "Banagher Links", and "Storage Box" will be given as participation prize

You can search for it using Vision Resonator, and youll be thankful when you do, as youre able to then search for any card that mentions Red Dragon Archfiend and add it to your Hand from either your Deck or Graveyard

It will be released IN JAPAN on April 18, 2025