It depends on preference. For me, it's
1: Fair KO power and does 12% damage. Not the best, but it's manageable. It is one of her KO moves if it helps.
2: Decently fast, and doesn't have much landing lag. Short Hops can be performed to prevent landing lag.
3: Grants Palutena small invincibility. You can even destroy a Blast Box and take no damage at all.

4: Capability of neutralizing relatively any projectile (except multi-hit ones iirc, like Smart Bombs),
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5: The move cannot be beaten in priority. It will either clash with a move or beat it.
Gotta love its priority. and such. <3 Many may prefer fast and spammable, but I prefer a good defensive one with special properties, let alone its ability to take out even the strongest projectiles and challenge strong attacks.