Yeah, this card is one of the never used cards i was curious about, so i did a kinda weird Morvran deck last week, with 2 Venendal Elites.
First of all, he's completely incompatible with Usurper, and you probably want something better when you use Emhyr or Calveit's ability, so that makes him viable on only 1/4 NG Leaders (1/5 when the new one hits the game)
And he is just too damn weak, 2pt providing 3 damage, both SC and SK have tons of cards providing that or better without any conditions. Definitely do not recommend it.
P.S.-if you use the gold soldier that lets you repeat the abilities of adjacent soldiers, it wont work unless you have used another of Morvran's charges on that turn.