Defiled Sinner — guide

In short

Defiled Sinner is an Epic Attack champion from the Undead Hordes: three attacking skills scaling off ATK, a self 25% Increase ATK buff before his hit, and a chance to drop 60% Decrease DEF on the target. His only defensible home is Clan Boss (3/5 on our rating); Faction Wars sits at 2.5/5 and everything else is near the floor. Build priority: none — he is vault and fusion material.

Strengths

• Two of his skills hit the whole enemy team: the AoE nuke is always AoE, and the Ripper skill turns AoE when 5+ enemies are alive.
• The AoE gains 10% damage per living enemy, up to +100% — solid numbers against full waves.
• Places 25% Increase ATK on himself for 2 turns before attacking, so his first volley needs no buffer.
• 50% chance to place 60% Decrease DEF for 2 turns before the hit — real value against chunky Clan Boss targets.
• With his finisher, if the first hit kills, everyone else takes damage equal to 15% of their MAX HP.

Weaknesses

• 1,222 base ATK on an Attack champion is tiny; damage stays modest even in good gear.
• 94 SPD and long cooldowns — he acts rarely in long fights.
• Decrease DEF is a 50% roll and only lands if you also invest in ACC.
• The second hit of his finisher cannot crit, so part of his kit ignores C.DMG gear entirely.
• No value in Doom Tower (0.5/5), weak in Arena, dungeons and hard modes (2/5), useless in Hydra (1/5).

Where to use

Clan Boss first (3/5): the Decrease DEF and the self ATK buff are what he is there for, and the AoE does not hurt. Faction Wars (2.5/5) as filler damage for the Undead Hordes. Arena, dungeons and hard modes (2/5 each) — he is not competitive; Hydra (1/5) and Doom Tower (0.5/5) — leave him in the vault.

Stats and gear

Priority: ATK% → C.RATE to ~100% → C.DMG → SPD. ACC around 150–200 only if you actually want the Decrease DEF to land in Clan Boss. Targets: ATK 3,500–4,000+, C.RATE 100%, C.DMG 150%+, SPD 170+. The author's note is attack and crit rate artifacts; Savage, Cruel, Speed and Perception sets fit that. Relics: Malefic Talon and Gorecrescent.

Masteries and blessings

Offense tree: Pierce Defenses, Foekiller, Piercing Strike, Bloodthirsty Prowess — all damage. Do not go further; he does not survive the content where those percentages matter. Blessings are not worth it, save the resource for champions you actually play.

Tomes

Skip them. If you have spare tomes, book the AoE first for its -1 cooldown at max level so it cycles faster; the finisher second for the same reason. Early levels only add 5–10% damage.

Verdict

A weak Epic with no niche — a couple of nice mechanics do not fix low ATK and a slow base. Vault him for fusion and do not level him.