pokemon center brilliant stars booster box TCG: Sword & Shield 36 Count : Toys & Games The Sword Elite Trainer Box [Pokemon Center]

The -3 ability is unusual

The infamous "Rampardos" ( Space-Time Smackdown ), a Stage 2 150 HP Fighting type beater that uses the move Head Smash, a 130 damage attack for 1 Fighting Energy that causes the user to take 50 damage recoil if it knocks out the Defending Pokmon

Everything from what cards you can include due to mana costs to deck construction to play is about mana

It's a 50/50 chance to get a card and some damage out of Gollum just through its effect, and there are ways to ensure the top of your deck always has at least one land and one non-land card

They then decided that it could be a 10/10 creature

Its Explosive Fire attack becomes significantly stronger when the card is damaged, rewarding risky playstyles