Limited Challenge: Dark Disaster - Astre Witch Doll Stage 3 (FTP)

Used Heroes:

Rose

Tracker

Incinerator 

Stage 1 

Pretty easy you are dumb if you fail this stage.

Stage 2 

Kill the galestorm first

Stage 3

Kill galestorm and strix first. Then stun the FrostWing that's the rule here chain stun that thing or it will heal to full health.

See video below on how i defeated it.