are mtg cards from the 90s worth anything old magic anything? The 10 Most Expensive Magic:

Both Blue and Black excel at playing cards from the graveyard, meaning Nymris draws you cards to play now and cards to play later, all while encouraging you to play a lot of creatures with Flash and powerful Instants

In the right deck, the cost of discarding a card every time Liliana ticks up her loyalty actually becomes a bonus

Into the Pit is pretty wild

Setting all of your opponents back while keeping your board intact is devastating

Staying mono reduces your options but it greatly increases your consistency and any fighting you might have to do over fixing

Single Combat is the gold standard: it leaves everyone with a single creature or planeswalker of their choice, but wipes out everything else and prevents anyone from casting creature spells for the next turn