Is Z Heal Block Palkia viable in Gen 7 Ubers?

I just came across it in gen 7 ubers and it’s great I think with +2 s atk. How viable is it? If viable why not used much?

Pleaselog inorregisterto add a comment.

There are a lot of reasons for this:

Palkia can use Psychium Z in conjunction with Heal Block to grant it a one-time +2 boost to its Special Attack. While this can be devastating against certain defensive cores, Palkia will lose the boosts if forced out, which makes the consistent power of Life Orb a better choice most of the time.

What I told is also mentioned in the analysis, as well.

Because both of its STAB moves are blocked by very threatening Pokemon such as Primal Groudon and Xerneas, Palkia can be a hit-or-miss Pokemon in battle, as it depends very much on its attacks finding the correct mark.

Palkia’s lack of Speed-boosting options makes it extremely limited against offensive teams.Arceus-Fairy: Arceus-Fairy is the best general answer to Palkia, boasting an immunity to Dragon-type attacks and the bulk to shrug off Palkia’s other moves with Recover. It naturally outspeeds Palkia and can swiftly KO with Judgment.

Source(along with a bit of help from a helpful Ubers player named The Contrast.)

Hope this helps!