Lamenter boss fight is weird

strange boss mechanics with 74985734 years waiting when boss is invisible and you can do nothing is weird. don't get me wrong, boss is not hard at all so i can't justify that much downtime and wait between each invisibility, it just drags the fight and makes it boring.
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Battlemage build details
Attributes
RL 180 Astrologer
VIG 60 | MND 40 | END 34 | STR 16
DEX 13 | INT 80 | FTH 7 | ARC 9
Armor
[no head]
Spellblade's Traveling Attire
Spellblade's Gloves
Spellblade's Trousers
Talismans
Shard of Alexander
Godfrey Icon
Magic Scorpion Charm
Dragoncrest Greatshield Talisman
Weapons
Claymore [Ash of War: Carian Sovereignty] (Magic Infusion)
Carian Regal Scepter
Flask of Wondrous Physick
Magic-Shrouding Cracked Tear
Opaline Hardtear
more details about the build:
eip.gg/elden-r...
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Elden Ring Shadow of the Erdtree PC gameplay boss fight: Lamenter

[@Skullwitchgirl]

Rogier 😢

[@MHShokuhi]

i'm keeping his memory alive in the Land of Shadow :')