How to Beat Phantylia the Undying

Learn the most effective strategies to defeat Phantylia the Undying in Honkai: Star Rail. This guide covers her weaknesses, attack patterns, and recommended team compositions for victory.

Stats / Weaknesses:

• Weaknesses: Wind, Lightning
• Resistances: Physical, Fire, Ice, Quantum, Imaginary, Dark
• Immunity: None

Phases:

1. Phase 1: Phantylia summons two clones, each with their own Toughness bar. Focus on breaking the clones' Toughness to prevent them from empowering Phantylia.
2. Phase 2: Phantylia unleashes her full power, using devastating AoE attacks. Prioritize breaking her Toughness to mitigate damage.
3. Phase 3: Phantylia enters her Undying state, regenerating health. Continue to focus on breaking her Toughness and dealing damage.

Strategy:

• Bring characters with Wind and Lightning damage to exploit her weaknesses.
• Characters that can cleanse debuffs are highly recommended, as Phantylia can inflict various negative status effects.
• Focus on breaking the Toughness of the summoned clones first, as they can buff Phantylia and deal significant damage.
• When Phantylia uses her ultimate, ensure your team is prepared to defend or heal, as it deals massive damage.
• Characters with strong single-target damage are useful for quickly eliminating the clones.
• Consider bringing a shielder or healer to ensure team survivability, especially during her ultimate attacks.