It gains 300 ATK, it is unaffected by your opponent's card effects, also the first time it would be destroyed by battle each turn, it is not destroyed
Gallery and List of Transforming MDFCs Bruce Banner / The Incredible Hulk Eddie Brock / Venom, Lethal Protector Gwen Stacy / Ghost-Spider Jennifer Walters / The Sensational She-Hulk King T'Challa / Black Panther, Hope Enduring Miles Morales / Ultimate Spider-Man Monica Rambeau / Photon, Living Light Norman Osborn / Green Goblin Peter Parker / Amazing Spider-Man Tony Stark / The Invincible Iron Man Best Transforming MDFCs #4
Its a big part of the puzzle. When the COVID-19 pandemic hit in 2020, John and Jeff didnt know what to expect
It was mostly normal monsters, some overpowered effect monsters (and others that aren't so useful), basic spells and trap cards
Oh well, we hope you at least get the general idea here