I actually don't think this is all that strong - at least in most rogue decks. It's +1 card draw over Polluted Hoarder but has +1 attack, is a neutral, doesn't require combo and doesn't limit the draws to minions. That doesn't seem actually all that amazing. In decks that run out of steam it's way too clunky and low-impacting and in decks that could use it, it's often worse than generic card draw like Auctioneer or Sprint and the like.
The fact that it draws you only minons is actally an upside in miracle rogue and combo decks in general, where you play so few minons that you're almost always guaranteed to draw your auctioneer/key combo minion. Maybe you can even play malygos rogue with this, since you have tons of draw with auctioneer and this to fetch it. Damn this is so good, probably too good.
Its an arcane intellect for minions and a 1 mana 3/2 on top of it. This is a strong card. It may not have an immediate impact on the board like vilespine (which some players actually said was a bad card because it was a 5 mana 3/4 completely ignoring the combo effect), but card draw is such an underrated powerful effect in hearthstone and the fact that it draws two cards for 4 mana on top of a 3/2 body should not be underestimated. Also I don't buy the argument that at 4 mana this thing will be hard to combo because Rogues have lots of cheap spells and are able to combo stuff like vilespine at 5 mana just fine.
I think when it comes to card reviews people put way too much emphasis on stats. Yes stats are important but you cannot ignore how powerful this card's effect is. At 3 mana this card would be broken.
So lets see... - Most (if not all) mages play Arcane intellect, that draws two random cards and costs 3, no board presence. - This costs 1 more and has a 3/2 body - vanilla 3/2 minions costs 2 mana (to be considered effective stats) - So you basically pay 2 more mana to draw two cards? yeah they are only minions but in a utility minion based class? and it can be returned to hand? Yes please!!! Trust me this will be played. Not sure it fits the aggro rogue type but maybe son tempo/control rogue deck.
Some good combo potential. May be a bit expensive to combo for a pull-out effect, unlike Vilespine Slayer which has an instant effect on board and 3/4 body, so you don't feel the 5-mana cost that much. But the next turn tempo swing is a real possibility.
I like it. Sits firmly in the 3 to 4 star area for most rogue decks. I don't like seeing cards with stats that are so good you feel like every deck needs to include them. This is very reasonably priced. Mana cost is high enough that aggro will not over-abuse it but is still a tempting choice.