Naturally, Eldrain didn't just stand and wait for this flaming disfigured centaur to get up. He used Frost Needle, the spell he was still most comfortable with, right away. Aiming this for the head, not knowing what the weak spot of the undead was, while at it he also activated Observe to figure out what he was facing.
[Flaming Reanimate (Corbol)] (Weakened State)
[Tier 4 (Fallen, unwilling undead); Level 29]
[HP: 809/1006]
[Mana: 300/525]
[Attack: 64(128)]
[Agility: 163(325)]
[A Flamming Reanimate, a cursed way of being brought back from death. As if in a burning inferno, the victim will burn for the rest of their undead life. The pain will never stop. Even after all its flesh has been melted off. The pain will only increase, the flames no longer able to consume something corporeal will dig deeper, burning the soul of the person into their bones. Binding it to this plane as long as its bones remain.]