Just be careful if your opponent plays Nibiru
Though found within The Brothers' War booster packs, the Transformers cards are not an official part of the set
Maybe the rebranding has finished since I've been there, I don't know
Lunala 38 Alolan Sandshrew Water 60 Scratch (20) Both 39 Alolan Sandlash Water 100 Spike Armor (20) During your opponent's next turn, if this Pokmon is damaged by an attack, do 40 damage to the attacking Pokmon
Millennium starter (+2 cards including a monster for cost) 5 interruptions (Red Supernova Dragon, Abyss, Dis Pater, Little Knight, Phalanx) 3 cards from hand used (2 cards for cost) The Millennium starter has more room for monsters compared to others, so the number of interruptions increases accordingly
The way to accomplish this is by getting a particular item that needs to be obtained before players can start using this cool mechanic