Predecessor Builds > Aurora > Tank Aurora Offlane/Jungle (Tempest - Megacosm)

1st item Fireblossom against phys. damage, flux against magical damage.
3rd item Fireblossom/Elafrost for phys. armor, Flux/Cuirass/Unbroken for magic. armor. Unbroken only against heavy cc and/or burst coupled to cc (Fey, Countess). Tainted Guard for Anti-Heal (though it only works if ppl are basic attacking you so its suboptimal. I would only build it situationally when both enemy offlane and jungle rely a lot on auto-attacking and healing (Greystone, Grux, Khaimera) and leave the teamfight-Antiheal to teammates.