beast is more for p8, p1 whatever, hoto much easier and cheaper to hit 125, with beast on hand, we are talking about expensive 2/20 or 2/10 but sacrificing 1 ring slot, also beast is a hassle when optimally summon with king of Leoric then swap

I solo ubers with my hc summon necro ez
I run beast on hand 3/3/3 darkforce spawn on shield
Eth andys with 15ias/29 fire res jewel eth fort eth infinity on might merc
Insight iron golem for unlimited mana for tele mainly for key farming if u dont care to key farm id make pride iron golem just for extra dmg for fun and slightly helps with boss killing
Overall you rely on army to tank and distract from yourself merc to make first kill so all you have to do is cast amp and corpse explode full screens. Ive found when doing ubers insight golem is useless and pride would be ideal but when key farming insight golem is a must. Ive tried the hoto route and imo fcr break point isnt as necessary beast is more beneficial to your merc and army for boss killing crowd control with amp/ce is so over powered it’s ridiculous. Also have treachery on swap for yourself and merc to proc before doing ubers if you ever plan on it. Its a must vs meph or your merc will die for sure