yugioh card rarity explained how to tell if is rare What to Know: Yu-Gi-Oh! Card Rarity Collection 5 full set

You can see the full deck list under the article, the main deck has exactly 51 cards

If Molten Man leaves the battlefield before his enters triggered ability resolves, the leaves-the-battlefield triggered ability will resolve first, and you will sacrifice a land before searching your library for a Mountain

I would feel almost entitled to run this in mono white, given the color can still sometimes feel like its punching up, but what makes white decks able to utilize this well is the lifegain that white can do very well

It's a lot like Phasing (where the creature leaves the board for a turn and then is useful the next turn), but done differently