Look, let's be honest: the latest 'Seven Knights Re:BIRTH' (SKRB) arena meta has been a bit brutal to magic-focused builds. Enter Reginleif, a new hero designed specifically to drag the 'magic deck' archetype back into the limelight. To get the most out of her, you’ll need a full roster of five magic-type heroes, which triggers a persistent 'Magic Vulnerability' debuff. She’s also a bit of a multitasker, healing the entire team and purging debuffs just by throwing out basic attacks. KookminTree has broken down the essentials of her performance and optimal builds below.

Q. So, who exactly is Reginleif?
A. She is a support-oriented powerhouse designed to bolster and empower your magic-type teammates.

Reginleif only hits her peak when you field five magic-type heroes. Most of her skills, passive aside, include an extra clause that applies 'Magic Vulnerability' when this condition is met. This debuff stacks up to four times, with each stack boosting the magic damage the target takes by 10%. At max stacks, that’s a juicy 40% increase. Once she hits Transcendence level 2, her reach extends from a single target to two.

'Advent of Light' hits every enemy on the board, dealing extra damage based on the number of debuffs they’re suffering from (capped at eight). On top of that, it comes with a built-in 30% critical hit rate bonus. If you manage to upgrade the skill, you’ll see improved coefficients, and at Transcendence level 6, that crit rate bonus jumps to a guaranteed 100%.

'Cosmic Rift' strikes all enemies three times, adding bonus damage proportional to their max HP—though it’s capped at 50% of Reginleif’s attack. Like her other skills, you get that handy 30% crit rate bonus. Once upgraded, it gains a 55% chance to apply a 'Paralysis' debuff for two turns, and at Transcendence 6, the crit rate hits 100%. Because these skills hit everything, she’s already being tipped as a solid pick for 'trash mob' farming, not just arena play.

Her passive, 'Vow of Harmony', provides constant immunity to all damage based on HP conditions, 'Immortality', and a reduction in the healing received by enemies. More importantly, every two basic attacks or one skill use, she heals the team and clears one debuff—provided you have those five magic-type heroes present, of course. Skill upgrades add a 24% defense reduction to all enemies, and once her 'Immortality' triggers, she activates the 'Final Judgment' buff, which we’ll cover in a moment.

Q. What are the core buffs and debuffs to watch out for?
A. The big ones are Immortality, Final Judgment, Debuff Cleansing, and Magic Vulnerability.

Reginleif’s unique buff, 'Final Judgment', only kicks in when her 'Immortality' is triggered. Once active, all her damage ignores 40% of the enemy's defense, and she gains a 49% resistance boost to shrug off enemy debuffs while resetting her own skill cooldowns. It’s a mechanic quite similar to 'Teo' from the early days of the series, and it lasts for two turns.

As for Magic Vulnerability, basic attacks add one stack, while 'Advent of Light' and 'Cosmic Rift' add two each. Since the cap is four, two basic attacks and one skill use will max it out. It’s a vital tool for shoring up the magic deck's traditionally lower damage ceiling compared to other builds. Just don't forget the 'five magic-type hero' rule—without it, you lose the debuff cleansing and the vulnerability effects entirely.

Q. How should I set up her gear?
A. Go with the Assassin set if you haven't hit Transcendence 6 yet; swap to the Tracker set once you do.

As mentioned, once Reginleif hits Transcendence 6, she gains a 100% critical hit rate bonus, meaning you can ignore crit stats entirely. If you’re below that, aim for exactly 70% crit rate to hit the cap. Before Transcendence 6, equip the 'Assassin' set with 'Critical Hit Rate' as your main weapon stat. Once she’s fully transcended, switch to the 'Tracker' set with 'Critical Damage' on the weapon. If you get confused, just copy the setup you’d use for Teo—it’s the same logic.

On top of the Tracker set, she gains a 20% 'Weak Point Attack' chance at Transcendence 4, making it relatively easy to cap. The current SKRB arena meta is all about those high-stat 'internal' builds. Most damage dealers aim for 100% Weak Point Attack and 100% Critical Hit Rate. With 20% from Transcendence 4 and 35% from the Tracker set, you’re already at 55%—just find the remaining 45% through substats. If you’re still short, swap your main weapon stat to Weak Point Attack.