Aren't you a rogue? Do you wanna kill a megaboss via cheese? Do you wanna rid of Guardian of Ukaizo but you don't start combat in stealth mode?
Here I am!
This is a way to get Gouging Strike even if you aren't a rogue and you haven't a rogue in your party
The procedure is not very difficult to reproduce but the odds it can happen are very very little, to be truth and honest.
But it has happened to me just against Guardian of Ukaizo battle and I wanna let you know
First of all: equip the Charm of Bones amulet. This amulet has the follow enchantment: Call the Restless which summons a random vessel.
Among the random vessel it can summon, there is also this one: Risen Armsman. If you manage to summon exactly this monster, it has indeed Gouging Strike among its abilities, and it can use it against you enemy!
It seems, since Rise Armsman is above all a ranged entity and that gounging strike is used particularly and mostly in melee by this monster, that it would be better summon the vessel close the foe you wanna kill in order to maximize the chances that gouging strike will be used... but these are my guess assumptions and maybe Rises Armsman can use Gouging Strike also ranged... or not using it also melee... who knows...
Anyway, Charm of Bones has 10 uses and the total number of summoned vessels should be 13, so how much are the odds you can summon a Risen Arsman?
If i am right, this is a typical Bernoulli Process, so with 1/13 single chance probability (about 0.0769) and 10 trials you end up with 0.383, thus almost 40%!!!
But then you have to hope Risen Arsman uses Gounging Strike... not so unbelievable at the end
If you manage to try this approach let us know how many times you can get a Gounging Strike without a rogue, thanks!