Decided to build two CoCs

I started the league using Walking Calamity Bear and it was fire. And I additionally had a 2nd character- Infernalist using Ice Strike. Since both characters were under-performing I began by reworking my Infernalist into Blood Mage CoC build: https://poe.ninja/poe2/profile/darknmy-2091/character/_Kuce_

After My (<1k div) Blood Mage was OK-ish, I decided to test (<1k div) Oracle CoC build: https://poe.ninja/poe2/profile/darknmy-2091/character/DipuDapuLacisNak

I'd say both look completely different, but perform similar DPS and clear. Blood Mage is faster at casting and life regen, but you can't leech ES, also Time of Need is super useful. Oracle feels 5% slower, but can pick up mana remnants. Both chars can "run ahead" in Vaal temple while the owner pics loot. Frost wall on both does a lot of energy and makes it easy to spam Cast on Critical. I had +2 Cast on Critical jewel on Blood Mage but I didn't saw much of a use. Blood Mage el.weakness cost 378hp, Oracle- 388hp. Tried Oracle w/o efficiency armor (cost 480hp) and it was doable, but not comfortable.