u/KvotheLightfinger

I've done quite a bit of digging and seen the following things may effect the spawning of Iron Valiant:

Night time
Lightning Storm
Lightning Rods
Plains
Ultra Rare

So, I went to a plains biome, used ars to make it night and summon thunder, dropped some lightning rods and put out 10 poke snacks targeting fairy, fighting, and an enchanted golden apple for rare spawn increases.

Iron Valiant does not show up on my PokeNav and I have not seen it spawn ever, although, every other ultra rare on the Nav has spawned.

Has anyone successfully hunted an Iron Valiant (and not just happened upon one)? What am I doing wrong? What methods work?

I've been running most content on T12 on a ball sorcerer and mostly mowing down everything in my path. I decided to start trying Mephisto on t10 for the seasonal quest and found it to be a bit of a learning curve, but not too terrible when I could get the first two phases down in a matter of seconds and focus on learning phase three.

I looked at a few strategy guides and I haven't seen any of them mention this, so I thought I'd share it here. I found that running away from him at the beginning of the third phase kept him from taking my powers at all and let me start DPSing him down immediately after getting back in range. Once I realized that, I crushed him pretty quickly. I'm sure I'm not the first to notice this, but I'm hoping it will help someone.