Champion concept - Smelter the blaze baron

Visual description - flamed themed baron champ, along the lines of Sion. Large champ made of rock with a round belly harboring a large flame within it, bald head with burning eyes and a rigid jutting jaw. Tank/Mage (high health and ap, low ad and speed) Ability description - Passive = above half health smelter will burn epic and legendary monsters along with structures on each basic attack hit for extra damage [scales off of ap] Q = Erupt lobs a large ball of lava within a short targetable radius around smelter leaving a small lava puddle for 1 sec (burns and slows) then hardens into an impassable for 2 sec [scales of ap] W = Seismic creates a wall of lava in a straight line targetable in a small radius around him lava lasts 1 sec and hardens into impassable terrain for 1 sec [ scales off ap] E = Vent when used (visually his flame dies) smelter can't use abilities for 5 sec but gains increase mr and armor as well as increased movement speed temporarily [scales off health] R = Volcanic when used smelter explodes dealing ap damage in an aoe around him burning and slowing all enemies hit however using this ability reduces smelter to 10 health no matter what [ap scaling ] Skins - Frost flame smelter, Pool party smelter, tiki smelter, rough neck (biker) smelter. Some Voice lines - "time to crush!" "Is it hot in here or is it just me?" "Let the heat flowwwwww!" "Watch out, I'm hot too the touch" deep gravely monster voice. Quick concept for champ :)