Talia — Epic Seven Light Thief: RTA Build, Counters & Win Rate

Talia is a 3-star Light Thief support-bruiser who mixes single-target pressure with team protection. Her basic attack can chip away enemy Defense, and her real value comes from her other two skills: one shields the whole team with an Attack-scaling barrier while handing immunity to herself and a chosen ally, the other strikes a single foe and — ignoring their Effect Resistance — strips two of their buffs and locks them out of being buffed again for two turns. She is fast and has no passive, so everything she does runs on her active rotation.

Counters

Buff-stacking enemies who rely on being topped up — Her third skill ignores the target's Effect Resistance and dispels two buffs, then makes them unable to receive new buffs for two turns, so heroes that lean on attack, crit, or speed buffs lose their setup and can't rebuild it on cue.
Enemies hiding behind immortality, barriers, or invincibility — Because that same strip ignores Effect Resistance and tears off two buffs at once, it reliably peels away the protective effects that keep durable targets alive, opening them up for her team.
Damage dealers her team needs to outlast — Her shared Attack-scaling barrier on all allies plus immunity for the caster and one ally blunts incoming burst and blocks the debuffs an enemy carry wants to land, letting her side survive the opening exchange.
Defense-reliant tanks she focuses down — Her basic attack has a chance to lower a single target's Defense for two turns, softening a bulky frontliner so her dispel strike and allies hit harder.

counterLady of the Scales60%

counterSpirit Eye Celine55%

Countered by

Cleansers and immunity providers on the enemy side — Her control hinges on the unbuffable lock and Defense Down she applies one target at a time; an enemy that cleanses those debuffs or pre-applies immunity simply shrugs off her setup.
Enemy dispellers and strippers — The immunity and team barrier she grants are her main protection, and an opponent who dispels buffs can rip those off and leave her allies exposed.
Wide AoE and cleave teams — Everything offensive she does hits only a single target, so she can strip and pressure just one enemy per turn while a team that spreads damage and debuffs across her whole side overwhelms her one-at-a-time pace.
Pressure during her cooldowns — Her barrier sits on a five-turn cooldown and her buff-strip on four, and with no passive to fall back on she has long windows where her protection and control are unavailable and she can be burst down or outpaced.

Skills

S1Ready to Pounce

Attacks the enemy and has a X chance to --decrease Defense-- for 2 turns.

S2Casual CheerCD 5

Grants immunity to an ally and the caster for 2 turns, and grants a barrier to all allies for 2 turns. Barrier strength increases proportional to the caster's Attack.

S3Break ApartCD 4

Attacks the enemy's vital point, with a X chance to dispel two buffs and make them --unable to be buffed-- for 2 turns.

Soulburn −20 soulsIgnores Effect Resistance.