sudowoodo pokemon card - 100/202 - Sword & Shield they discard Benched Pokémon until they have 4 Pokémon on the Bench Sudowoodo - Snow Hazard #80

Seymour Flux Its Phyrexian Arena, but on a creature

Megatron, Transformers: Roll Out or Rise Up, and Transformers: One Shall Stand, One Shall Fall

The Invincible Iron Man Legendary Artifact Creature Human Hero Flying, haste At the beginning of combat on your turn, you may put an artifact card from your hand onto the battlefield

The league instructions are up on the official site with all of the details, but stores have been sent them too.

Rip Test (Destructive Test) The rip test, as the name suggests, involves tearing the card to look for a blue or black core layer

Sometimes you need to pay some mana and other times you need someone to play no spells during a turn (this is the Day/Night mechanic)