New Dragon Steed for the Dragonrider class.

[Flyingace]

I was looking at making a magma dragon for the dragon rider class (http://www.d20pfsrd.com/classes/3rd-...es/dragonrider) and i came up with this. Not sure if its balanced and would like your opinion on it.

Magma DRAGON (CN)
STARTING STATISTICS
Size: Medium; Speed: 50 ft., fly 40 ft. (clumsy); AC: +5 natural armor
Attack: bite (1d6), 2 claws (1d4)
Ability Scores: Str 13, Dex 16, Con 13, Int 12, Wis 12, Cha 11
Focus: move action
Special Attacks: breath weapon, 1d6 fire, 15 ft. cone; Special Defenses: immunity to fire, paralysis, sleep; Special Qualities: darkvision (60 ft.), low-light vision, scent, superheated (+3)

8TH LEVEL ADVANCEMENT
Size: Large; Speed: 60 ft., fly 50 ft. (clumsy)
Attack: bite (1d8, 10 ft. reach), 2 claws (1d6)
Ability Scores: +8 Str, +4 Con, –2 Dex
Focus: swift action
Special Defenses: DR 5/magic; Special Qualities: darkvision 120 ft., superheated (+6)

16TH LEVEL ADVANCEMENT
Size: Gargantuan; Speed: 70 ft., fly 60 ft. (clumsy)
Attack: bite (2d8, 20 ft. reach), 2 claws (2d6)
Ability Scores: +8 Str, +4 Con, –2 Dex
Focus: free action
Special Defenses: DR 10/magic; Special Qualities: superheated (+10), magma breath (counts as two uses of breath weapon and uses same area, magma clings to those it damages, dealing half damage each round thereafter for 1d3 rounds. )

[Debihuman]

Define superheated in this context please or cite to the magma dragon as this: http://www.d20pfsrd.com/bestiary/mon.../-primal-magma

How are you getting fewer HD for a Medium magma dragon? See for example here: http://www.d20pfsrd.com/bestiary/mon...a-dragon-young or here: http://paizo.com/pathfinderRPG/prd/a...-dragon,-magma

Debby

[Flyingace]

The bite of the magma dragon does fire damage (superheated) so at 1st lvl its +3, at 8th its +6 and at 16th its +10.
The dragon is based on the dragon steeds made for the dragon rider class as can be seen near the bottom of the page in this link;
http://www.d20pfsrd.com/classes/3rd-...es/dragonrider
Since they are used from lvl 1-20 they are rebalanced so as not the be OP while playing the game, thus the fewer HD.