Does it contain everything for a Deacon to fulfill his MINIMUM Divine Office prayers?
I assume you’re talking about permanent deacons, since I believe transitional deacons are bound to the entire LOTH.
In either case I would think not, since what is in
Magnificat is, as OraLabora said, an abridged and unofficial extract. I cannot imagine, for example, that it would be acceptable for a deacon to pray only part of Morning Prayer (Lauds) or Evening Prayer (Vespers). With
Magnificat, that’s what you get. Plus you get other stuff that isn’t part of the office. I just compared what’s in
Magnificat (French version) for Morning Prayer today (All Saints) to what’s in my breviary (volume 3 of four-volume French LOTH), and the only similarities I see are the Canticle of Zechariah and the Intercessions. The Psalms are different in text and quantity. The hymn, reading and concluding prayer are all different.
Also, Night Prayer in
Magnificat is the same for the entire month (as pointed out by marytk) whilst in the the breviary it follows a weekly cycle.
As an aside, could someone enlighten me as to what the minimum requirements are for a permanent deacon in the US, as established by the USCCB? I live overseas. Where I am all permanent deacons have the four-volume set so I imagine the requirements here are quite extensive.