Nike Conquest Build (Solo)

Hello Danni,
Solos usually are a front line, so you need to be more tanky.

First of all, change Ninja Tabi in Warrior Tabi, she doesn't need attack speed, Rend and Plan of Action are enough to clear the wave plus poke your enemy.

Stone of Gaia is good, I like it specially on her since she has no heal and it combines well with Plan of Action passive, but this item is more situational. If you have an enemy with some CC that activates the Gaia passive, get it, if you don't have, get another item.

Change your Jotunn's Wrath in Breastplate of Valor if vs physical and Genji's Guard if vs magical (or Pestilence if vs magical healer).
Mystical Mail does not combine with her so I suggest you change it in Midgardian Mail, Hide of the Nemean Lion or even Spectral Armor if facing multiple critics on the enemy team.
As a second magical defense go for Pestilence if you didn't do, Bulwark of Hope or even Genji's Guard if you didn't do.
Then you can go into some hybrid protections such as Mantle of Discord, Spirit Robe if facing too much CC or even Magi's Cloak if facing too much hard CC (remember while you are casting Sentinel of Zeus you are CC immunity and you cannot suffer knockup or knockback while casting Rend).

For last but not least you can pick some bruise item such as Masamune or Shifter's Shield or even Void Shield, to take advantage of his passive that increases power in percentage.

With this item you will be a true tank and your late game will be ridiculous strong, and you will be a powerful and a really really tank ;)

Warrior Tabi, Breastplate, mystical, urchin, pestilence, Mantle. Or Warrior Tabi, Genji’s, midgardian, spirit robe, Void Shield, mantle.

Not saying your build doesn't work for you, but in Conquest, it's typically suggested not to go for items like Jotunn's Wrath for a solo Warrior unless you're already stomping the enemy and having a good time.

Solos will generally build almost all protections, with maybe one or two hybrid type items such as Masamune or Void Shield.

I will say that Stone of Gaia is a more functional choice for Nike than some other warriors, due to the shield from Sentinel of Zeus...but Gaia isn't always the best item. Right now it's considered somewhat situational.

Mystical Mail is an okay item, but I would say unnecessary for her. She's got great clear in Rend, and she can't really keep enemies close, like Osiris or Bellona, and it doesn't synergize with other abilities like it does with Cu Chulainn, for example. Instead, you should be seeing some counter options, like Pestilence on the magical side, or Midgardian Mail on the physical side.

And yeah...where is the magical defense? Masamune doesn't count.