Iseria

Iseria is a 5-star Earth Ranger built around enabling a single allied attacker and tearing down a priority enemy. Her signature skill, Oathkeeper, instantly resets one ally's skill cooldown and hands that ally a Greater Attack buff, letting your main damage dealer fire its strongest hit twice in quick succession; this skill ignores cooldown manipulation, so it can't be locked out. Her S3, Full Bloom, is a single-target nuke that strips all of one enemy's buffs, then makes that target Unbuffable and lowers its Defense for 2 turns. Her basic attack also has a chance to apply Defense Down, so everything she does is focused on one enemy at a time rather than the whole team.

Counters

• Heroes propped up by buffs or shields — Full Bloom dispels every buff on its target and then locks the enemy as Unbuffable for 2 turns, so a unit relying on stacked attack buffs, an immunity buff, or a protective barrier loses those layers and cannot simply re-apply them on its next turn.
• Defensive bruisers and tanky targets — Both her basic attack and Full Bloom apply Decrease Defense, so a high-Defense wall takes far more damage from Iseria and from the ally she empowers, eroding the survivability that target depends on.
• Slow or one-shot allied carries — Oathkeeper resets an ally's cooldown and grants Greater Attack, letting a strong nuker land its biggest skill again immediately at boosted damage; against an enemy that survived the first hit, the second empowered strike often finishes the job.
• Hard-to-kill front-liners that must be opened first — Stripping buffs, denying re-buffing, and shredding Defense on a single priority target sets up your team to burst down a key threat before it can stabilize, since the Unbuffable window stops it from refreshing its defenses or healing into fresh buffs.

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