The Norse-Gaels SAGA battleboard is built on personal challenges. Personal challenges represent combat between single champions from units engaged in melee and are settled with a die roll. The defender can decline the challenge but then the Norse Gaels automatically get the benefit of their battleboard ability associated with the challenge. Most opponents will accept the challenge on the off chance of winning the die role and denying the NG their battleboard ability. I say "off chance" because the NG battleboard can generate a +1 or 2 bonus for personal challenges. The odds should always be stacked in their favor.
A couple of neat tricks...
Howling Axes: Gives 3 additional attack dice, 5 if the unit is armed with Dane axes. That's a good reason to field axes in this warband.
Slaughter: All 1s rolled become hits, 2s too if you use a rare rune. When combined with the Dane Axe, you can turn all of your attack dice into hits. Combine this ability with Howling Axes and a small unit of hearthguard can wipe out a much larger one. Deadly!
With abilities like Slaughter, Howling Axes, Death Dance and Ostmen’s Fury, their Viking roots shine through. If you like running Vikings in SAGA, you’ll love their mad cousins, the Norse-Gaels.
I'm working my way through the Great Courses lectures on the Vikings. The 34 half hour lectures count as 1 book at Audible.com so with my monthly subscription, it's a bargain compared to the retail rate. I paint with the door to my painting room open and I think my family is enjoying the lectures as much as I do! So far, it's a great deep dive on the Norse. When I'm done, I'm going to grab the Romans and Barbarians course next.