Ambush or Shadow storm?

I'm jst wondering Ambush is better or Shadow Storm is better for Vert?

Ambush, in general, will be a better choice for 1v1. However, if you plan on using your Vertedeath for 2v2 PvP, team modes, etc., then, you might want to choose Shadow Storm. If you have Cunning in ladder, your Vertedeath will always use that move anyway so unless you only PvP 1v1, I suggest Shadow Storm. I have found it excellent in team modes and PvP. It has less accuracy but it also has a percentage to be crit (whereas Ambush is always a crit) so the power is amplified (by a factor of 2) when it activates.
As I said, I find Shadow Storm to be more useful but Ambush has that extra 15 power, if the Shadow Storm crit does not happen.

Good luck!

I find Ambush not quite good enough to even replace Sneak Attack.

15 extra effective damage with Ambush is nice, but against the Evade talent it's worse, if the attack misses it's worse, if Sneak Attack crits, it is worse.

shadow swipe (boost matk) + ambush combo (map/pvp/ladder)

deal really nice damage with matk boost from shadow swipe.

Talent - Magic Force 2

Ambush 1 hit kill
1 boost = almost all boss in veteran
2 boost = kill all boss in veteran/ almost all boss in expert
3 boost = kill everything (except Shriek & high health,mdef monsters)

i only have that combo on my A+ meniss and it work well

if u have both skill make 2 meniss with different combo..