While "Death Spike" requires bones (which cost Adena), a solo Necro can farm efficiently using "Body to Mind" to convert HP to MP and "Corpse Life Drain" to get that HP back.
Summoners are the most cost-effective classes in the game. If you are starting on a fresh server with zero items, pick a Summoner. l2 interlude best solo class free
Your summon does all the work. You only need to provide "Beast Spiritshots," which are cheaper than the regular shots used by players. While "Death Spike" requires bones (which cost Adena),
The "Transfer Pain" skill allows the Necromancer to redirect 50% of incoming damage to their summon (reanimated monster). This makes them the tankiest mage in the game. Your summon does all the work
In Interlude, the Necromancer isn't just a mage; they are a hybrid of a summoner and a debuffer.
You only need to upgrade your weapon once every 20 levels. Your damage comes from your skill level, not your gear. 5. The Warcryer – The Self-Sufficient Mage
Specifically great for soloing because their "Shadow" summon has a Life Drain effect, keeping itself healed while it kills.