I don't think it is good enough. It feels like it was designed for Baku with double healing, but you can't fall back on Sunfury Protector or Defender of Argus in odd decks. On a side note, it always has the potential to attack on your turn without healing if you use Void Ripper.
This goes into a Baku the Mooneater deck right? As priest, I think you could heal this up pretty efficiently with the upgraded hero power. Still annoying that you have to heal it after every trade. It's like a stubborn child and you're the mom lol
With the Glitter Moth it's a 5/16. One divine spirit inner fire (or double spirit if you don't have the Moth in time) and opponent is toast. So it'll always be risky for them to ignore. Add two Divine Hymns, Baku, maybe Lady in White and we can have a nice mid-range combo priest
Here is another minion that can only attack under certain conditions.
Ironwood Golem and Gemstudded Golem had Taunt, and could fulfill their purpose without attacking. Without any similar powers, I don't want to spend the extra effort keeping this guy's health up, even with access to Priest cards.
I could get around its effect by silencing it, but without Purify in addition to Silence, I don't think Silence Priest will get another chance in Standard Mode.