In 'Seven Knights Re:BIRTH' (hereinafter SKRB), the PvE endgame content known as the Descent Expedition is all about squeezing out maximum damage within a strictly limited number of turns. Think of it as the 'hard mode' of your standard Castle Rush. Karma, in particular, is a bit of a nuisance, boasting a 90% damage reduction against magic attacks and any skills targeting 1-2 or 4-5 enemies. Naturally, you'll need to pivot to a hero packing physical damage and 3-target skills.

Enter Bidam, the perfect fit for the job. As luck would have it, he received a timely skill buff right when the Descent Expedition first launched. This turned him into an absolute staple for any serious Karma run. KookminTree has broken down why Bidam is the lynchpin for your success.

Q. So, what kind of hero is Bidam?
A. He is a pure damage dealer who thrives on stacking and detonating 'Bleed' debuffs.

Bidam is, at his heart, a pure DPS unit focused on the Bleed mechanic. Outside of his passive and the 'Taejeon Pohwa' skill, he keeps the pressure on with basic attacks and 'Geogung Sinpo.' His passive, 'Descendant of the Hwarang,' grants a physical damage boost for 3 turns and heals him for 50% of his physical attack power every three attacks. Note that this applies to both skills and basic strikes. Once fully upgraded, the damage boost jumps from 29% to 35%, and the healing efficiency increases from 50% to 55%.

'Geogung Sinpo' was significantly improved alongside the addition of the Descent Expedition. It deals piercing damage to three enemies twice, with a 55% chance to apply a 3-turn Bleed debuff per hit. Upgrading it raises the damage coefficient and bumps that Bleed chance to 60%. Reach level 2 transcendence, and the cooldown drops to 55 seconds, with a 100% chance to re-apply Bleed if the target is already suffering from it. Before this patch, the skill lacked any Bleed effect entirely—a welcome change for stability.

'Taejeon Pohwa' strikes three enemies with 120% power, triggering a Bleed explosion. It consumes up to three stacks of Bleed, with damage calculated based on the number of stacks and their remaining duration. Skill upgrades push the physical damage coefficient from 175% to 205%, and at 6th transcendence, the explosion power climbs to 150%. His basic attacks also have a 35% chance to apply a 2-turn Bleed, which increases to 40% with upgrades.

Q. What are Bidam's core buffs and debuffs?
A. Simply put: Bleed and Bleed Explosion.

The core of Bidam's kit is the aforementioned Bleed. This status effect deals piercing damage equal to 60% of his attack power every turn, effectively ignoring the target's damage immunity. It stacks up to five times, and the damage scales with the number of stacks. While the 3-turn duration from Geogung Sinpo and the 2-turn duration from basic attacks differ, they stack seamlessly.

Bleed Explosion is Bidam's signature move. It detonates existing stacks for instant damage, consuming up to three at a time. The damage scales with the number of stacks and the time remaining on them, so for maximum impact, you really want to trigger this when you have three stacks ready. If you're wondering whether you should hold off when there's no Bleed active, don't sweat it—Taejeon Pohwa has a solid base coefficient anyway. Most seasoned players suggest firing it on cooldown.

Q. How should I kit him out?
A. We recommend the Avenger set with a focus on Critical Hit stats.

When it comes to gear, the Avenger set is the only real choice for Bidam. Since you’re using him in the endgame Descent Expedition, that 4-piece Avenger set bonus is non-negotiable for boss encounters. Aim for Critical Damage, Critical Rate, and Attack Power. For your weapon, stick to Critical Damage and Critical Rate to hit your damage ceiling. Fill in the sub-stats with similar offensive bonuses and you're good to go. If your Avenger set pieces are lacking, you can use an Assassin set as a temporary stopgap, but remember: as a DPS, your Crit Rate is everything.