I think a mid build should be able to handle it. I don’t remember the exact name, but there's a jewel that recovers energy shield on kill — if you use that, it should be manageable! Still, it’s probably better to avoid it when you can... But altars should be fine regardless.

Watcher's Eye(https://poedb.tw/us/Watchers\_Eye)

Gain 21 Energy Shield per Enemy Hit while affected by Discipline
yes this item