Last mistake of the knight

For the fire and Armor challenge at as a level 4 entry.

Thanks to all who provided the excellent stock:

Dark burial grounds by ~SafetyInNumbness [link]
Foggy 3 by *TwilitesMuse [link]
Branches by *simfonic [link]
Branches iii by *simfonic [link]
Flowering tree stock 2 by `Shoofly-Stock in storage
Tree stock 9 by `Shoofly-Stock in storage
Tree 41 by *FrostBo [link]
Tree pack 002 by =zememz [link]
Armor 3-10 by ~Cobweb-stock [link]
Dragon 7 by *Elevit-Stock [link]
Dragon ice by *Elevit-Stock [link]
Fog brushes by `DanLuVisiArt [link]
Fantasy glow fractal grass by *FrostBo [link]