buy phantasmal flames booster box Pokémon Bundle Mega Evolution Phantasmal Flames expansion! Phantasmal Flames: Sleeved Booster Pack

It's got the 'snake heads branch off a snake body' model, but instead of snake or dinosaur heads, the Balduvian Hydra's multiple heads look like

You can set up a Starmie V, Radiant Greninja V or just another Origin Forme Palkia VSTAR

No matter what color the creature is, no matter if its an artifact or not, the creature will die (with or without regenerate)

4 or more: Add 1 "Spellbook" Spell Card from your Deck to your hand

To ensure that youll always have Zombie World at the ready, a new, high-ATK Level 4 monster protects Zombie World from being targeted or destroyed by card effects, and if you dont have Zombie World at all, you can banish this monster from your field or Graveyard to activate the powerful Field Spell straight from your Deck or hand

Lets break down how many packs are in each Japanese booster box, starting with the most recent generation