My Troops idea(Cerberus)

Name of Troop: Cerberus(could consider this as the dragon or P.E.K.K.A of the dark barrack :P )
Training Cost: lvl1:600 Dark Elixir,lvl2:725 Dark Elixir,lvl3:850 Dark elixir
Training Time: 1 hour
Housing Space: 45
Damage per second: lvl1:345(115 per head),lvl2:375(125 per head),lvl3:405(135 per head)
Hit Points: lvl1:4500(1500 per head),lvl2:5400(1800 per head),lvl3:6300(2100 per head)
Preffered Target:Any (but if attacked,he will then focus on defense)
Movement Speed: 12
Attack Speed:1.5 second
Range:2 tiles

Description: On a rampage,this beast is unstoppable.Using his three heads,he has the opportunity to attack several places at the same time.He attack building by breathing black flames and crush walls with his huge paws.He resist pretty well to heat and inferno tower but he's weak against heroes like the barbarian king and the archer queen.If one of the head die,he gain a temporary berserk buff giving him + 50% attack for 5 seconds.

reference art:
http://www.ptkineticrace.org/sites/p...cerberus-l.jpg