First of all, this is a nice upgrade path, it's not like the infinite Potions where it's RNG based, just pure grind.

But the items needed to complete one cost almost over 3 bil plus a specter's energy.  All for 4 DP and 40 HP at TET.

PA needs to add a small buff to this like *Monster DMG Reduction and increase the HP bonus it gives*

PRI - Monster DMG Reduction + 2  HP + 50

DUO - Monster DMG Reduction + 4 HP + 100

TRI - Monster DMG Reduction + 6 HP + 150

TET - Monster DMG Reduction + 8 HP + 200

If you could make BS weapons Obsidian it would be worth the 3b, but the armors, naw not even close to worth it.

+1

I am in huge support of this, the cost of getting the upgrade vastly outweighs the benefit.

Also, there should be an Obsidian set bonus. A goal to get them all to the Obsidian level. 

DR on Obsidian TET = C6 PEN Boss Armors

Price of Boss Armor is between 19-25 Billion. 
Price of TET BlackStar armor is between 12-15 Billion.

Price of C6 Caphras is 6 Billion.
Price Obsidian mats around 3 Billion.

Did you knew that if you combine all of PvE DR bonuses on Obsidian TET Black Star Armors = DR on C16-C17 PEN Boss armors.


They literary gave us cheap and easy to get Armor, and you want it buff even more? 

I have to echo what Astronaut posted above.   

Obsidian BS armor upgrades are comparable to putting several caphras levels into PEN Boss gear.  

Base price TET BS armor is cheaper than PEN boss armor, and the materials to upgrade TET BS armor to Obsidian is cheaper than the cahpras to upgrade PEN boss armor to the same stats.  

It is already substantially cheaper than equivalent PEN boss what more do you need?!

So in the future I hear there might be a stars end world boss. The world boss may be dropping an upgrade stone for blackstar weapons like the ones that exist in the hadum region for armor. It may be fair if that item drops that you could choose to use it on your armor for an additional 4-5 monster dr or 1(1)dr 1(1)eva +20hp(2 sheet DP) to push it to c8 from c6. That, or create a build path from TET Obsidian to PEN Obsidian Blackstar (PEN Obsidian gear same stats as regular PEN Blackstar Gear) that can be material grinded like boss gear has with the caphra system at c20. Maybe give the Obsidian gear the ability to use additional stones on them to get higher "caphra level" thast would eventually allow them to get to "c20" or even just giving obsidian blackstar gear the additional ability to throw caphras in them. So many routes to take.

Personally I would rather they add something other than MAX HP to obsidian. Adding +2HP per hit or +2WP/SP/MP per hit would be much more useful.