Satoru gives all the creatures in your hand a ninjutsu ability, and once per turn, when one of those quasi-Ninjas drops in, you can do a little deck fixing
This promotional card was a prestigious accolade awarded exclusively to the winners of a Pokmon Card Game contest held in the renowned Japanese magazine CoroCoro
We see a clear trend in how creatures with drawbacks were released in Magic 's middle years--we've pivoted from massive "Timmy" creatures with huge upkeep costs or "enters" effects to a smaller, more efficient model
The deck is mostly creatures that play well with your commander's ability, with a supporting cast of instant-speed answers, board sweepers, and ramp spells
I can certainly envision scenarios in which this guy is good, but I dont think hes the answer to Pod and Twin a lot of people seem to think he is
Plus, it's got a really cool design - based on a biblical angel.