There are websites (like this here one), articles, YouTube videos, and all manner of content platforms that talk about the most popular cards, what to do with the formats staples, and stuff you need to be playing
However, if a card has been reprinted and appears in an eligible deck, any version of that card will be legal to play
I wont embed the picture to save some space but dwarf warrior with long ginger-bearded is the aesthetic I go for in my day to day life
Sauron, Lord of the Rings Sauron, Lord of the Rings has some pretty powerful effects and can give you a lot of value when cast at the right time
Delney, Streetwise Lookout, a mythic mono-white legend from Murders at Karlov Manor, lets creatures with power 2 or less get in on the fun, doubling not only any 'enters' triggers they may have, but any triggered ability they possess
Easily one of reds best sorceries ever made, the Grenade dishes out five big damage for only one mana and one Goblin