Hero Grimbeorn the Old can defend and kill within one tiny action – all over the board. Combined with Armored Destrier he can do that multiple times, given enough resources at hands. For this he does have 5 build in attack power. As nowadays most enemies do need an attack power of 6 be killed, he needs a bit of a strenthening. Instead of wasting restricted slots he can use the Dunedain signals. Still beeing vulnerable at the first attack, we need some shadow canceling. For this we do use hero Balin.
The card listing, as well as a detailed description of each cards purpose, can be found on ringsdb.com