I found an interesting way to beat Mortii Chamber 5.
Hero : Blademaster (Captivator does not help that much here)
First purposly kill off a 3star Flame Mage and 3 crappy 1 star neanders.
Then drop your whole team WITH paragon.
They should get Sharp armor.
When the Flame mage gets reanimated, it will proc Sharp armor 5 times and deciminate the enemy team. Paragon stops the pesky Rebirth.