This is an A+ in typal decks but has serious drawbacks outside of that strategy
I have put Yawgmoth, Thran Physician on 7th place on my personal list, but I can see that he deserves better
Fusion Reserve X TRAP Reveal 1 Fusion Monster in your Extra Deck, add 1 of the Fusion Materials whose name is specifically listed on that card from your Deck to your hand, then you can add 1 "Polymerization" from your Graveyard to your hand
A PSA 10 first edition Charizard sold for over $420,000
The game has changed a lot since then, with new keywords and more powerful cards than ever, but the basics remain the same: Take a deck of cards with a mix of mana-generating lands, creatures, artifacts and other spells to battle against your opponent
take control of 1 face-up monster your opponent controls until the End Phase