Honestly, Magores is one of the teams that if you just have their set plus the core, you can build a pretty good deck right off the bat. It may not win a tournament, but will get a good feel for how the group plays and have a decent game against most opponents.
Heres an idea to run. I do something similar when im playing newer players and teaching https://www.underworldsdb.com/shared.php?deck=0,176,178,179,180,183,184,188,189,190,191,193,194,195,201,433,427,424,384,383,343,331,340,271,244,N506,N504,N505,N409,N310,N306,N446,N294,175,177