The ability that defines Consuming Aberration's power and toughness works in all zones, not just the battlefield
There's also some weak cards like Interceptor, Shadow's Hound which is really cool and self-reanimate is thematic, but there's only a single Assassin in the deck (not even a commander) and a 4/3 without evasion is simply not worth getting back anyway
There are many reasons to collect Magic: The Gathering, but there is even more fun to be had by playing it as well
I remember when Hydras Growth got printed, the lack of trample got mentioned in my LGS during prerelease as being weird, until someone had a Moss Viper with 128 counters on it because their opponent didnt draw into removal
This can also double as a win condition with certain other cards, like Isochron Scepter
Duh is cheap removal for any creature that reminds a player of any effect they already know