Server security from bots (L2Walker, L2Net, L2Tower, etc) provides LameGuard.
Security from all kinds of ddos attacks provides DDOS-GUARD.NET / HyperFilter.COM

Server rates:

Xp - 75x
Sp - 75x
Aden - 50x
Drop - 20x
Spoil - 35x
Quest Reward - 3x
Quest Drop - 10x
Raidboss Drop - 15x
Zero our Reward - 1x

Olympiad:

Olympiad Starts 18:00 (GMT+2)
Olympiad Ends: 24:00 (GMT+2)
Hero Changes: Every Sunday 24:00 (GMT+2)
Olympiad points have to be exchanged on Sunday
Hero Status can be retrieved from Monument of Heroes

Enchantment Rates:

Max Enchant: +16
Safe Enchant: +4
Simple Scroll: 58%
Blessed Scroll: 64%
Crystal Scroll: 64%

Grand Boss Respawn Time:

Valakas: 192 +4
Antharas: 144 +2
Baium: 96 +2
Frintezza: 48 +2
Zaken: 40 +2
Queen Ant: 32 +2
Core: 24 +2
Orfen: 18 +2
Barakiel: 5 +1

Additional Information:

28 Buff Slots + 4 debuff
Buff Time 2 hours
Free Class Change
Free SubClass Change
Fully working RaidBosses/GrandBosses
Noblesse with Caradine letter lvl 65 in GM Shop.
Global Olympiad
Auto Learn Skills
Scheme buffer
Ideally balanced classes (accomplished in Olympiad environment)

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