BS2 SL1 DLC3 Boss 5

Done without leveling up, taking any stat-up souls, or going into Chaos Dungeon.
Covenant is Margaret
Turn 1-end: Heal using goddess blood. Use all elemental attribute buffs, 2 carpenter screws, madness mead, 2 fairy's wing, and the requiem drug from Crimea. Switch to Twin Blades and attack twice(thrice on the first turn). Switch to Anchor and defend. Rinse Repeat till they're all dead.

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Whats the first ring?