Shadowverse

It looks like an anti-aggro tool, but for aggro, it's a "fourth turn: do nothing," a "face is the place," and a "woohoo, a target for DoT." It can punish any tempo and midrange decks. But I think it's too clunky of a card for dragon decks.

Just because it says "more enemies"? An amulet with a condition, summoning a vanilla, non-evolving body for 4 mana? Doesn't look good even at first glance.
I understand that the idea is to put this junk on the fourth turn, attacking into an even board, for example. And it's like it has a dormant amulet on your board and is thinking with its hand in its nose and drool on its beard: "Hehe... I'm going to play an Evo-Floral (2017)? Hehe, why not?" On the next turn, you kill it with Sibyl and the evolved version, and by the end of the turn, you have it and the dragon on the board, so it can deal with them, casting two Death Rattle spells for 5 damage.
Or you just play it, trading one unit, and then it plays more minions, and you get your investment back. A 5/5 for 4 on turn 10 is value!
Or you play it on the fourth turn, attacking into a full board, it hatches, but a 5/5 can't profitably kill a class-specific, overpowered 4-drop with Evade.

Actually, it's just another interesting filler for Arena.