After Omen changes the game seems to be lacking a good all around defensive armor + health item
Ohmwrecker currently does not have a good reason to be bought in bascially any situation.
Perhaps make Ohmwreaker do something like reduce the next physical damage from a champion by 35% (25 second cooldown) Cooldown is reduced by 1.5 seconds when dealing single target damage to enemies .5 seconds for AoE abilities.
Remove the turret debuff active. It is not often useful with how the game is these days where mid to late game tanks take 20+ turret shots and are still above half health.
Keep the build path as is or at most add another ruby crystal to it, up the health to 450 and up the total cost to 3000 if a ruby crystal is added.
Give this item a reason to be bought.