Every praetor deserves a good base. The one that I'm planning for my new Alpha Legion acquisition is not different in this regard. Luckily for me, I picked up this beauty recently that I will be using with the praetor miniature (as opposed to constructing one from scratch).
Of course, this base belongs to Sevatar of the Night Lords legion. It also happens to be one of my favourite ones from Forge World. I like the way that the actual base itself slots into the side of the display base. Many Forge World bases are fully encircled by the display base (cf., various other praetor level marines, and some Primarchs). The ones that slot into the side are without doubt my favourite type due to their simplicity and low level of messing around to get the playing base out from the display base. And of this type, I really dig Sevatars. In fact, I was toying with using this one with Alpharius himself at one point, but decided against it.
The base comes in three parts (four if you count the black circular citadel base as well). The smallest part is the arm of the marine who lies dead near the foot of the shallow staircase. This part is simple to glue in place though, but I would advise dry fitting your miniature of choice to ensure that this arm works with the rest of the miniature before gluing everything in (doubly so for a kitbash like what I'm up to here).