These old cards are highly collectible and have an awesome nostalgic feel to them, regardless of how playable they are
I like that its not stopped by counters or damage prevention
This list is primarily aimed at Commander players who need a hand sheltering their cards from their opponents
When Slave of Bolas came out, people complained that it was oversexualized and rapey, essentially because it was a female angel (fully clothed, by the way) who had been mind controlled
This lets those cards act as ETB creatures, like letting Bonecrusher Giant be a great Flametongue Kavu (amongst other things)
Pair him with cards that reward frequent combat like Alesha, Who Smiles at Death or Raid payoffs, and Carnage becomes a relentless Rakdos aggro commander