Finally, an alternate build for Riven
My standard all AD build:

5.16 theorycrafting alternate tank build:
Dead Man's Plate
Since I don't play Riven with boots anyways (inspired by BRNA), this item will enhance movement speed, while still giving survivability and damage.
Frozen Mallet
Added slow on your auto attack, while still giving you insane amount of HP for survivability.
The Black Cleaver
A must have already for the 20% CDR. The added HP for survivability plus more movement speed on attack.
Last Whisper
Bloodthirster
Situational. LW for tanky comp, BT for squishy comp.
Titanic Hydra
With all the HP in the other items, this item will compensate for Hydra in damage.
Youmuu's Ghostblade
This is important for the 10% CDR and goes very well with BT late game. Get this last.
Overall AD, 330 Not calculating passives and actives, the new build is only 5 damage less than my standard all AD build. Riven can still maintain her AD scaling for her shield, while having an increased amount of HP.
3720 HP at level 18. The passive, 5+10% of hp in damage, 42.2 damage every hit. So technically, the 50 damage is 92.2. Much better than Hydra. Cleave, 40+2.5% of HP, 93 cleave damage. Compared to Hydra, which is 20% - 60% of AD in cleave damage, Riven is still maintaining some cleave damage. The active, 40+10% of HP. 412 damage on your next attack. In exchange, Riven loses AoE damage for a single massive hit.
The debate between 12% lifesteal and 400 HP is out the window because as a tank, permanent HP will always be better lifesteal. Lifesteal is conditioned to on-hit while permanent HP is always there.
With the new Titanic Hydra and Dead Man's Plate, players can now play Riven as a tank and still do a significant amount of damage.
as must haves, you now have two new things to beef him up.
titanic is great for it deals with basic attacks and Garens Q is considered a basic attack, so he can do even more damage with it.
