Seren

Seren is located in the wilderness and you will lose items upon death.

Preparation

Since Seren is in the wilderness having quick escape methods from PKers are a must.
Use the best range set-up that you're comfortable to potentially lose. This will also increase your magic defence against Seren's magic attacks. A charged Craw's bow has a damage increase to monsters in the wilderness so this is a good option if you have it.
Purchase a Royal Seed Pod from the PVM Store for 650 points. Clicking on it will teleport you out of the wilderness below level 30 wildy.