Find drop and spoil sources for Weapon Upgrade Stage 2 in Lineage 2 High Five. Compare the recorded quantities and chances, then open a monster's page for its location and stats.
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Weapon Upgrade Stage 2
If you bring it along with a Spear of Silenos Stage 2 to the Ketra Orc Intelligence Officer, you can exchange them for Spear of Silenos Stage 3.