NCF – Extended list of Neutral creatures.

If creature suggestions are still relevant, here is my suggestion: Attack 20. Defense 20. Damage 25. Hit Points 200. Speed 10. Initiative 11. Shooting: NO. Mana 50. Spells: - Haste (Expert), Holy Word (Expert), Resurrection (Expert). Activated Abilities: - Divine Retribution (1 time per battle). - Elrath's Aegis (I came up with this, 1 time per battle, protection from any spell, even their own – maybe there is such a thing, but I don't know about it). Skills: - Living Creature. - Endless Retaliation. - Immunity to Dark Magic. - Cleaver. - Crippling Strike. - Rage. - Spellcaster. - Commander's Presence. - Courage. - Lucky Companion (I don't know what it's called when luck cannot be less than 1). - First Strike (if it exists, let it be). - Child of Light. The ancient servants of Elrath, the Templars, have always been ready to come to the aid of his children. Those who fell in battle with honor may go to Elrath, or they may return to the battle at the will of the Templars, so that they may fight for Elrath and for the light until they win. But the Templars are respected not only for this; they are able to avenge the sins of all those who have wronged Elrath and his sons. Even the undead fear them, for dark magic has no effect on them. But no one dares command them except the servants of Elrath and the God-Dragon of Light himself.

Added 6 minutes later
Regarding appearance.

I suggest that if such a creature appears, it will look like a Death Knight, but with a modified appearance.