Remind me why you'd want to kill it?
Honestly I think it's stats are low enough, so its ability isn't that bad.
If the stats are low, why would I use it in the first place? It's very likely that people are going to buff this with Shard of Patience, Blessing, or Chaos Seed and utilize it that way due to its skill. Parallel Universe doesn't make any of the three buffs I've stated much better.
Well if you buff it like that, then hard CC wouldn't work well anyways even without the ability. It would be like most other creatures and be vulnerable to RT at that point.
Honestly, I think the card is more interesting as a source for death effects, although not so sure about how reliable/effective it would be.
Also, if you were to raise the max HP (through buffs like Blessing), would it respawn with -1 from that new max HP or from the original max HP?