When Brian created the Rats, he wasn't thinking about what kind of card could break the four card limit
You can take this card early because it predicts opening up a wide range of synergies and reliably get paid off on one or more of them
Small errors on Magic cards are incredibly notable, and Magic cards have very precise designs
Effects that exile cards from the graveyard, like Tormod's Crypt or Relic of Progenitus, directly remove them from the graveyard, triggering abilities that care about cards leaving
Those creature types take center stage, and even the new mechanics are really creature focused, with mechanics like teamwork and power-up relying on creatures to function
If anything, this card often feels antithetical to what you want to be doing in Magic