I was surprised today to log in and see my Mithril golem had become epic warding... as someone who's build was based around it I was quite shocked. So far:
I can see that defensively it functions similar, although it has some very heavy drawbacks for me.
1) my golem mastery feats are now useless
2) my golem WAS my damage source outside of L40 hack slash event (since, necromancer / death immunity everywhere), and the new spell STILL
blocks summons same as the old golem aka this means now I can not use summon spells for damage or distraction, including class features or the L7 spell of the indestructible Mordenkainen's Sword, and have lost a source of damage. If possible, altering the epic warding into a special type of animal companion or at the very least a familiar would allow you to use summons and or another combat golem to compensate for the loss of a 1850 Hp tank that had higher AC than me, and punched for 60 damage through all the insane mob resistances vs physical. At L30, that was actually significantly higher than I can manage with my horrid wiltings, or other necromantic spells, cos... multiple attacks.
(if you can see the code for them, the dinosaur familiar feat alters a companion to another type, and the animal domain of cleric adds the companion class ability to a cleric, and of course Exalted Companion adds a template onto a companion. Can the two be combined to grant the ward feat taker the animal companion feat, set its type to 'ward golem', and the Focus feats augment the ward as per the Exalted companion alteration of stats and abilities?)
On the plus side, I do like how there's a reason to take abjuration focus feats though. Since dispelling was of very little use.
For my own clarity, how much % was mitigated by the old golem with the mastery feats? 40% is less than a basic L2 shield other spell...
P.S. Can you call the spell 'Mortisfillia's Epic Warding'? Cos I'm going to do an LLCO post soon where Anita is dismantling her golem and designing a spell based off the golem's spell runes to fix the lore with her sudden loss of a golem.