EliteCabal
Item

Proof of Warrior

Quest Item · option 1337 · 1×1 slots

Careful: item 2877 exists under other options too, and they are different things. Proof of Fighter (option 1336), Proof of Swordsman (option 1338), Proof of Mercenary (option 1339), G.D. Certificate (option 3189), G.D. Certificate (option 3191), G.D. Certificate (option 3193)

Best place to farm

Steamer LHJ-86C in Steamer Crazy (Premium)

A mission item, rolled for this species independently on each kill.

100% almost every kill
Show these spawns on the map

Drops · 1 source

Rates are what you experience: the server's drop multiplier is 1x.

From Where Rate
Steamer LHJ-86C level 123 · 250,240 HP Steamer Crazy (Premium) level 112-123 mission 100% almost every kill