Son of Arnor is a bit of a niche card. He really only fits in a dunedain deck. But that ability can help clear out the staging area for questing and two attack is always useful, expensive or not. Synergy with forest snare and archery sink is good as well
Son of Arnor
Response: After Son of Arnor enters play, choose an enemy card in the staging area or currently engaged with another player. Engage that enemy.
The Fellowship of the Ring
Core Set #15. Leadership.
I have a feeling that Son of Arnor was designed for core set for one reason only and that's Goblin sniper. And that's also the only reason why I put him into a deck. He is too costy for expendable chump and his stats are not so good. Maybe later, when I'll get more cards for Dunedain, he will be more useful. Artwork is very nice, but it won't change his usefulness. Verdict: 2/5.