Seems like such a basic design, why is this a warlock card and not a Neutral?! There's nothing about this that screams "Warlock" or in any way relate to the mechanics Warlock is known for. Maybe if the summon is a Demon or has some kind of card text, it would be slightly more interesting.
So it can summon, potentially, a sheep, a boar with charge, a thingy with windfury, a chicken with enrage... and what else? I was curious when I saw this in the trailer with a 1/1 for 1 statline, I'm definitely intrigued.
I was curious about a card like this, something like a hunter spell that generates a bunch of the 1/1 beasts, but instead we got Call of the Wild, and this.
Definitely cool, I guess we can't look at the beasts for their tribe, just for their cool design with the card. Beastlock is almost laughable in concept.
Edit: The fact that this is a common means it's good for arena, and in constructed it could work in a budget zoolock deck.