"Megamorph" Rating Score by シエスタ

The venerable equipment that first appeared in the very first duel in the original work.
As the name suggests, it can double the RBI of the equipped monster under certain conditions, and the higher the RBI, the stronger the monster.
However, if your LP is lower than your opponent's, it has the disadvantage of being halved if it is higher. If you inflict a lot of damage on your opponent with the equipped card, that situation is likely to occur, so you want to decide the match at once. It works well with cards that require an LP cost due to their characteristics.
However, since this card does not specifically specify the target to be equipped, it can be equipped to the opponent, and if you are in a situation where his LP is advantageous, you can use it as a weakening card.
In addition, you can dare to strengthen the opponent's monster and use it together with a monster that gains his ATK of the opponent's monster to get a tremendous hit point. After that, if you remove the giant growth, you can expect a lot of damage due to the hit difference.
I think it's a deep equipment with hidden combos that you wouldn't expect to see in the early days because it's hard to perish.