He is a former assassin with a hidden past. He specializes in single targets, launching strong, endless attacks on enemies while dashing around their blind spots.
Pros and Cons
+ DoT damage + Self buff + Self amp + P.DMG amp (T4) + Great in single target situations
- Requires high investment - UW reliant - Needs 100% Crit
Curtain of Darkness
20 sec Cooldown
Move behind the enemy with the lowest HP and deal
??? P.DMG. Each stack of Bleed on the enemy inflicts additional 50% DMG. All stacks of Bleed are removed afterwards. If Crit, recover 2 MP and reset skill cooldown.
4 sec Cooldown
Upon a critical auto-attack, deal
??? additional P.DMG.
Notes: Hack [Light] is good since mana gain is always useful. Hack [Dark] is too unreliable to warrant a spot. Curtain of Darkness [Light] is an okay choice if you have enough mana gain already, 40% ATK boost is pretty sweet. Curtain of Darkness [Dark] is pretty meh. As Roi, you'd want to be spamming Blade Claw instead of auto attacking, so this kinda defeats the purpose.
Notes: Blade Claw [Light] is probably the best. Extra 80% damage is no joke, and the extra 1 mana cost is negligible when you have a BD set and mana runes on your Unique Weapon. Blade Claw [Dark] is meh, you don't really need that extra 1 mana orb, when Blade Claw already refreshes 2 on a crit. Roi usually gains the third (or fourth if you picked Dark) orb in the delay between casts if you have decent mana gain. Also, 3 Bleed stacks won't happen as often as you'd like. Merciless [Dark] is pretty good too. You could take this if you want to help your party out more, that 25% increased P.DMG is pretty useful if you have other physical dealers in your team. It also has 100% uptime if you spam Merciless often. Merciless [Light] is pretty useless, I'd skip.
Notes: Pick Dark, no hesitation. Roi's T5 Dark perk is too good to pass up. Attack speed and Crit Damage upon using a skill (which you should already be doing) is really really good. It's like getting buffs for doing what you already do. Dark far outweighs Light's stat buffs.
Specter's Breath, Redeal
|Each auto-attack has a 25% chance to inflict P.DMG on enemy||(50% of the ATK)||and inflict Bleed.|
|★||(60% of the ATK)|
|★★||(72 % of the ATK)|
|★★★||(86 % of the ATK)|
|★★★★||(103% of the ATK)|
|★★★★★||(125 % of the ATK)|
|Knights||Clause, Demia, Jane, Morrah, Phillop, Ricardo, Sonia|
|Warriors||Gau, Kasel, Naila, Priscilla, Scarlet, Theo, Viska|
|Assassins||Epis, Fluss, Gladi, Mirianne, Reina, Roi, Tanya|
|Archers||Arch, Dimael, Luna, Maya, Selene, Yanne|
|Mechanics||Annette, Lakrak, Miruru, Mitra, Oddy, Rodina|
|Wizards||Aisha, Artemia, Cleo, Lewisia, Lorraine, Maria, Nyx, Pavel,|
|Priests||Baudouin, Cassandra, Frey, Kaulah, Laias, Leo, May, Mediana, Rephy|