Given that the Wizard tokens are 0/1s, giving them +1/+0 is a big deal, potentially even giving you a combat phase that you wouldnt have otherwise had
Some people swear by 4, Ive tried none and havent particularly missed them so Im very much inclined to say its not actually that necessary in the deck, but I sometimes chuck in 1 or 2 in there and reuse with Junk Arm if its a necessary use
Cards can also come in special editions or holographic versions, which can significantly increase their value
Nexus users can share their builds with the community
Each game offers unique experiences that appeal to different types of collectors and players
It's just a one-for-one, so you can run a deck where you are really looking for, say, five specific cards on the first turn of the game to get a wicked combo