Muun & Season Pass

A Muun is a small pet that strengthens your character. Press Y to open the Muun inventory. Each Muun has one skill, which it uses on its own from time to time, and one passive; both turn on when their conditions are met. When the Muun levels up its skill levels up too, while the passive stays the same.

• Normal type: follows your character, and its look changes when it evolves.
• Mount type: summons a mount you can ride. Use the button at the bottom left or Ctrl+Z. In the Season 9 rules it could not be ridden in towns, safe zones, Chaos Castle or Illusion Temple.
• Sub-slot: the slot to the right of the main slot. A Muun there is not shown in game, but its skill and passive still work. You cannot put the same Muun in both slots.

Season 10 added new Muun abilities and new ways to switch them on. An ability may need a number of monster kills, kills of one specific monster, or a certain play time; the count is shown on the Muun tooltip and is kept when you change slots or log out. If the same ability sits in both the main and sub slot, the two values add up.

Since Season 9, unwanted Muun or evolution stones can be fed into a Muun Energy Converter bought from an NPC shop. When the converter is full it becomes a Wizardry Stone, which NPC Monica in Elbeland (24, 229) exchanges for evolution stones of Muun already in the game.

Tempest Muun arrived in Season 18 Part 2, after the Premium Muun run ended. A Tempest Muun Egg gives a chance at one: the Amplification egg gives a Skillpower Increase option and the Frenzy egg an ATK/Wizardry/Curse Increase option. The option value depends on your character level and the Muun's level.

• The option works on Wednesday to Sunday. Once evolved during its Tempest period, it works every day.
• A multiplier based on Muun level is active for 30 days after you get it: ×5 at Lv 1, ×7, ×9, ×11, ×13 at Lv 5 and ×20 when evolved.
• Tempest Muun cannot evolve through the Muun Energy Converter. It needs a Tempest Muun Evolution Stone Box from the Season Pass or the in-game shop.

The Season Pass event runs every month for 28 days, although the schedule may change. Daily missions, such as using MU Helper, defeating monsters or using certain items, give pass EXP. Missions reset at 00:00 each day, and the pass levels up to Lv 20. Pass Tickets give pass EXP too and carry over to the next event.

• Buff rewards start at once and last until the pass ends. Item rewards go to the Gremory Case (Character) and stay there for 7 days.
• When the pass ends its level, EXP and buffs reset. Pass data follows the character on a character or server transfer.
• The Soul Crystal buff makes monsters in set hunting grounds drop Mastery Soul Crystals, for example Darkangel crystals in Nixies Lake and Brilliant's crystals in Ignis Volcano, up to 100 a day. 2,500 crystals, 10 each of Jewel of Bless, Soul and Creation, 1 Jewel of Chaos and 1 billion Zen make a [Bound] Mastery Soul at 100%.