I'm sorry, but in my humble opinion, "Knight of Poison" is nonsense, just like the other "… of Poison" units.
I agree, the unit name isn't very good...
Maybe something like this:
Nizarite Nomads
City Level 5
Unknown
Characteristics:
Attack 26
Defense 17
Damage 18-24
Health 95
Speed 7
Initiative 15
Ranged -
Mana -
Experience 125
Growth 4
Cost 1000 gold
Abilities:
Large creature, Living creature, Animal Poison, Charge, Magic Strike, Swift Attack, Hit and Run.
Description:
Haven't come up with one yet