4/5 stars. The rules are great.
Background.
The Dawnbreakers are the elites of the assault squads for the Blood Angels. They are known for accompanying Sanguinius himself in dawn raids as they sprinkle down from the skies to liberate long long human colony worlds from xenos and tyrants alike.
Strengths.
High movement, WS=5 and armed with the falling star power spear. This does impact (SM) and breaching whilst bringing AP=3 to the table. You can exchange this in Legacies with a pair of equinox blades to get an extra attack which might be attractive, but I'd value the spears higher. A couple of perdition weapons might also be desirable for the Aflame rule here.
Alongside this, they come armed with grenade dischargers (frag and krak) which are a great shorter ranged weapon for when they charge in.
And charge in they are very likely to. They have deep strike natively as you would expect with jump packs. They also have Set the Sky Aflame. You cannot be targeted by interceptors over 12 inches away when you deep strike. This is very strong indeed.
Rounding this off is the fact they have a 2+ save and 2 wounds each which explains their higher points cost, but they are still worth it.
Weaknesses.
Not many, but I would recommend a character being attached to them.
Melta bombs for 25 points for the entire unit are good for larger units, but not as great for smaller ones.
Builds.
10 Dawnbreakers, Melta Bombs, 3 Perdition Weapons (315 points).
A baseline build (you could go smaller) that is effective and strong.
