LAOINFO

The boss will summon 2 sandstorms shortly after the fight begins.

These sandstorms aggro onto players and moves towards them very slowly.

Standing in the sandstorms will apply a MS debuff on you. Getting 3 of these stacks will petrify you.

After the sandstorms are created, the boss will periodically do an earthquake move as indicated below.

Unless you have 100% Earthquake Immunity, you will be shocked for 10 seconds.

After a short while of doing the earthquake, the boss will do a one shot move.

You can time the one shot move by counting the number of moves the boss does.

The boss usually does it after 3 moves used. 

If the move animation takes a long time, ex. rolls, it will do it after 2 moves used. 

To avoid the one shot, you must stand in the sandstorm to get 3 stacks and get petrified to become invincible.

Players can prep 1 or 2 stacks of the debuff to make sure you get 3 stacks in time.

The invincibility effect still lasts for a bit after wearing off.

In RU, the one shot mechanic, doesn't one shot anymore.

If the boss kills someone during the one shot move, the boss will enrage. In RU, it's if you get hit.

The boss's attack speed and damage will increase.

The sandstorms disappear and he will not do the earthquake/one shot mechanic anymore.

Instead, an AoE will appear around himself and damage all surrounding players.

To get the boss back to its normal state, you must knock the boss.

Once the boss gets back up, it will lose its AoE and go back to doing normal things.