Dark Scars

• This is one of Phase 1 bosses in Inae Dusk War, a dungeon in level 115 cap.
• You will have a gauge next to your character. When you're hit with Scars' attach, the gauge will fill up. When completely full, you take heavy damage.

Rodeo of Fury

• Scars summon lots of flame machines on the map and charge at party members. Destroy the machines by guiding Scar to them to reduce pattern stack count.

The Disease's Footsteps

• Scars has a purple area underneath and follow a party member. Flame machines will continuously fall on the map. If the machine touches the purple area, it's contaminated.
• At this time, if you do basic attack on this contaminated machine, it flies to Scars and reduce pattern stack count. 

References

Namu Wiki

YouTube - 히카리타마