【Fate/Grand Order】 Atalanta (Alter) Solo - Oberon-Vortigern (Avalon le Fae 30-3)

This "solo" doesn't really fit my normal criteria of a solo, but there's not really any other way to do it.
[Boss Mechanics]
- You are forced to bring Artoria (Caster) and Mash as starting members. Artoria has Attack UP +200% (permanent) that also grants a hidden NP Regen +20 (permanent).
- If Artoria and Mash are both on the field after Turn 1, then Artoria will grant Mash ATK UP +200% (permanent) that also grants NP Gain UP +50% (permanent), and Mash will become Level 100. This occurs at the end of your turn.
- At the start of battle, Oberon grants himself Debuff Rate UP +100% (permanent) and Attack Trigger (permanent) that removes 1 buff from the target. When a buff is removed, the target is inflicted with ATK DOWN -20% (3 turns).
- Upon Oberon's 1st HP Break, he inflicts Attack Trigger Debuff (permanent) on all your units. He grants himself Damage UP +30% (permanent) against units with debuffs, and NP STR UP +25% (permanent). The Trigger inflicts one of the following: DEF DOWN -30% (1 turn), Star Rate -100% (1 turn), or NP Gain -50% (1 turn).
- Upon Oberon's 2nd HP Break, he grants himself NP Charge +10, Ignore Invincible (permanent), Ignore DEF (permanent), and NP STR UP +100% (permanent).
[Boss Behavior]
- Oberon cannot use his 3rd skill.
- Oberon always uses his 1st skill if he does not have NP STR UP buff.
- During his 1st and 2nd HP bars, Oberon can only use his 1st skill when he does not have NP STR UP buff, and he cannot use it to complete his HP gauge.
- During his 3rd HP bar, Oberon has a 25% chance to use his 1st skill without restriction.
- Oberon has a 30% chance to use his 2nd skill. During his 3rd HP bar, he has a 25% chance to use it.
- Every 5th turn, Oberon will use an extra skill called "Scales of Enchantment" if you have 2 or more active members. It inflicts Sleep (3 turns) and Turn Trigger Debuff (3 turns) on one of your active units. The Trigger inflicts HP Drain -2000 and grants Oberon 1 NP charge.
- Oberon avoids targeting your units that have been inflicted by "Scales of Enchantment" for 3 turns.
[Solo Strategies]
This solo depends entirely on luck. Atalanta needs Artoria's buffs to deal enough damage and increase her NP gain. If Atalanta has Extra Attack Append, then she might have an extra turn to win.
Use Mash's 1st skill after her 3rd skill so that Oberon doesn't remove her Target Focus on his first attack.
All of the following are required:
1) Bring Chaldea Combat Uniform Mystic Code.
- Switch Atalanta and Chen Gong so that you can remove Artoria on Turn 1.
- Stun Oberon to prevent him from removing buffs and inflicting ATK DOWN.
2) Equip a Craft Essence with starting NP to use Atalanta's Noble Phantasm on Turn 2.
3) Engrave "Mage of Flowers" Command Code on a Quick card and "Crest of the Titan's Pit" Command Code on the Arts card.
4) Engrave Command Codes that increase damage.
5) Engrave "Mini Ushiwaka" Command Code on a Quick Card to remove ATK DOWN debuffs.

[@severren1095]

Very nice.
Atalante alter was one of the first 4 stars I got.

[@beadlescentral834]

753