You need 2 ppl (I recommend: SPS, necro)

Find a victim with good items and let's begin:

Its tricky, Necromancer summons his summon and must damage his summon till <20 HP left (to keep <20hp i recommend use Freezing Shackle) and SPS must buff Freezing Skin for victim. While summon's hp <20hp he must send him to attack victim. Now it's funniest part…Once summon hits victim he reflect dmg and kill summon, and gain karma. Now you need your SPS help to kill victim and take drop.

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Lineage 2 Adena.