Highlander decks are my absolute favorite thing about SoU. I had a blast with Reno pre-nerf, am having a blast with Brann, and I've been making weird things happen, from a buff highlander paladin to a highlander plot twist deck. It's been super fun playing around with the idea, but I've noticed that people playing highlander warrior and paladin run Octosari. I really want to try those lists, but I don't know if I feel comfortable spending the dust on a card with consistently lower played win rates than the deck's win rate. Why would you run a card that, on average, lowers your win rate when played? Is that hail mary draw really worth it?
You don't need it, It's definitely not a win more card. It's funny - sometimes it is literally a dead card in your hand, sometimes it's just an 8/8, sometimes when you play it your opponent treats it as a 'soft taunt' and it opens up other plays.
I bet you could use something like Bull Dozer to similar effect. Though it is a fun card I will say. Not needed at all imo.