MoM is extremely good, and could almost be considered core for the same reasons it's often considered core on Void. Both heroes are bashlord heroes, and both heroes have a bash that does a lot of damage when it goes off, 90 physical for Sniper, and up to 140 magical for Void. Sniper doesn't need damage early on, he needs attack speed, and he needs move speed. MoM gives you both for only 1900 gold.