For this build I wanted to explore ways to utilize minimum power and endurance charge stacking from the new Conviction of Power heirophant notable. Although heiro no longer has a way to generate new power and endurance charges, having minimum charges provides a lot of consistency and allows you to bypass the downsides of certain items by avoiding charge loss.

Noteworthy Interactions:

• Conviction of power grants +4 minimum endurance and power charges. Willclash helmet grants 5% spell block and 5% increased elemental damage per power charge, but causes you to lose all power charges on block. Stacking minimum charges allows us to bypass the downside of losing charges, and permanently cap our spellblock without needing Glancing Blows.
• Precursor's Emblem rings can roll the mod "You cannot be stunned while at maximum endurance charges". Since we have +4 minimum endurance charges from our ascendancy, we're always at maximum endurance charges and are thus stun immune with this ring. Very important on a MoM build.
• Since we're stacking up a few power charges, The Aylardex gives us +1 max power charges and 1% damage taken from mana before life per power charge, as well as some life, mana, and mana regen. Combined with Mind Over Matter, Cloak of Defiance, and Divine Guidance we have 57% of damage taken from mana before life.
• Inner Conviction from the Militant Faith timeless jewel fits nicely into the power charge stacking archmage theme, granting 3% more spell damage per power charge. Militant Faith jewels can also convert notables to grant extra minimum charges.
• This build use Storm Call, which had its damage buffed by 30% in 3.13 and has a very low base cast time. The new Nexus Gloves base grants us "30% chance when you pay a skill's mana cost to gain that much mana back", which helps sustain fast casting on an archmage build.

PoB for the character in this video: https://pastebin.com/aKfBQgCy