Emptyness

The 1-mana cost can make this card completely broken - cuz you can combine it with so many other cards like Myra, Elekk's, etc. 

and I also wonder, like twoodz928, about the cap of this "upgrades each turn"-thingie - …

Right now, only 1 card (rogue one) has the ability of giving you lackeys, so I wonder, what other cards will grant us those very situational, a bit underwhelming, 1-drops?