OM Ancient weapon

I’m trying the shadow method but guardian is holy so he takes them out
On the 18 or 19 floor

Hard work for shadow arkadions in this OM, during the dungeon u should have no problems because there are fire and wing arkadions that u can beat easily with shadow. When u face the guardian there are often Dark arkadions so u can use Holy arkadions to defeat them and defeat Guardiron in the end. Try to summon Tiamat or Deucalion they can help u

Metal slash. Even with shadowlance it does 1500 damage. You could also buff them up with reinforce. Then each hit would do like 1800-2000 damage

You might just need to level up. I got guardiron with the shadow strat, i had 8 plasmos and 4 shadowlances. They were all level 99 though… Also, what ocarina are you using? If you can, use the shadow ocarina. and like drop doc said, use metal slash

I may be wrong, but I’m pretty sure the Ocarina has no effect when it comes to anything online, including the OM’s. 

I think it does, becuase I was using the gold ocarina first, but got destroyed by the level 18 boss, then I used the shadow ocarina and killed them with ease

also, it affects how many arks you carry

It doesn’t do anything for PVP

OMs are a different story