Admiral-Badruck wrote:what prevents them from assaulting..?
The independant character allowing them to deepstrike.
The Libby must be attached to the unit to use Gate to take them off the table and deepstrike back on. You cant use Heroic Intervention if you have a character attached.
Hence, Sternguard. The libby gates them over to where they need to be, they wipe a unit off the table. The libby then gates them to the next pod and the next target.
Not that all that really matters since BA dont get Gate for their Librarians. Just regular Vanguard and a drop pod with a locator beacon is pretty good though, but with descent of angels the pod isnt really a requirement. If you plan to deepstrike a 250 point land raider with 200 points of assault terminators inside it, I'd make gosh-darned sure that there was a locator beacon on the table first.
Painted Minis in 2014: 510, in 2015: 300, in 2016 :369, in 2019: 417, in 2020: 450