MapleStory/Arkarium

Arkarium is the final boss of the Silent Crusade/Cross Hunter storyline. He can be found in the Temple of Time, through the Dimensional Schism. Arkarium is one of the Black Mage's commanders, responsible for sealing the Transcendence of Time, Rhinne.
 * There are 3 modes: Easy, Normal, and Crazy, the latter being only available in JMS.

Pre-requisites

 * Completed Silent Crusade fully.
 * Level 140 or higher for both modes.
 * Maximum 1 entry daily regardless of mode.

Overall stats
Both modes have a 30 minute time limit.

Easy

 * Level: 140
 * HP: 2,100,000,000 (2.1 Billion HP)
 * DEF: 60%, neutral to all elements
 * 5,000,000 EXP (5 Million EXP), 500 ambition
 * 5 death count

Normal

 * Level: 170
 * HP: 12,600,000,000 (12.6 Billion HP)
 * DEF: 90%, neutral to all elements
 * 5,000,000 EXP (5 Million EXP), 500 ambition
 * 5 death count

Skills

 * Screen Crack which deals 999,999 damage and has a large amount of range
 * Summons Netherworld Monks, which can heal him and themselves
 * Throws a blue ball at you (40% damage)
 * Blue thunder rain attack
 * Pinpoint target (debuff you so that you take more damage for non HP-based attacks)
 * Petrify (Tap repeatedly left, right arrow key to get out, or else instantly die after 15 seconds)
 * Cancel Weapon damage (Reduce physical damage taken to 1)
 * Cancel magic damage (Reduce magical damage taken to 1)
 * Damage reflect
 * Genesis (Spots that will be hit are marked 3 seconds before dealing 40% damage)
 * Banish (sends player to a void-like room with a weak monster that resembles the player; player can freely use buffs here)
 * Transform a player into a snake
 * Seduce

Rewards

 * Dominator Pendant recipe
 * Dominator Pendant (super low drop rate)
 * Arkarium ring recipes (High Lord, Oracle, Berserker, and Guardian)
 * Mechanator pendant
 * Glowing Soul Crystal (individual drop)
 * Max 180 per world weekly, limit resets on Thursday 12am
 * 5x value on Reboot servers
 * The entire service will be adjusted the same way, and adjustment happens every Thursday 12am
 * The price will be based on the time the crystal is obtained, not the time it is sold. You can check with NPC Collector to see the price and to sell the crystals.
 * Price shown are by solo standards. The actual price is inversely proportional to party size when entering the boss fight
 * Suspicious Cubes
 * 2 for Easy mode
 * 3 for Normal mode
 * Boss Medal of Honor (individual drop, gives 100~200 Honor Points when picked)
 * 2 for Easy mode
 * 4 for Normal mode
 * Potions
 * 20 Elixirs for Easy mode
 * 7 Power Elixirs for Normal mode
 * Fragment of Distorted Time (used to upgrade the Dominator Pendant)
 * Arkarium Soul shard (individual drop, collect 10 for a random Arkarium weapon soul)