SP Viper — Viper Assault
Acid Monster provides massive poison ATK and amp, which directly scales viper bounce damage AND Tier 1 healing bonus. The HP penalty is manageable because Viper stays in the back line.
Gem Spider's skill DMG stacking synergizes with Viper's constant channeling. The Fireball Chain passive is wasted but +100% skill DMG at max stacks is substantial.
Jadeite/Jadeite/Jadeite
Emerald/Emerald/
Diamond
Jadeite/Jadeite/
Ruby
Emerald/Emerald/Diamond| Star | Branch | Effect |
|---|---|---|
| T0 | Viper Aura | During channel: heal all allies 10% of Viper's ATK/sec |
| T1 | Voodoo Medicine | Healing bonus = 15% of poison ATK (double-dip) |
| T2 | Viper Protection | All allies +2% DR + 2% DMG/sec (max 15 stacks = +30% each). Cleared on interrupt |
| T3 | Heavy Curse | Interrupt threshold: 3 → 5 hits. Enemies: no shields, -50% DEF, -15% all resist (2s) |
Team DR/DMG Stacking Healer. Cannot auto-attack. Channels vipers for team healing, DR stacking, and DMG stacking. Tier 2 at max stacks: +30% DR and +30% DMG for entire team. Protecting Viper is the #1 priority.
Skill: Viper Assault
Cannot auto-attack. Viper's only damage source is his skill.
Active Skill: Channel vipers at target for 350% poison DMG (5x poison scaling), bouncing between up to 5 enemies with decreasing damage (300% / 250% / 200% / 150%).
Interrupt mechanic: Taking 3 hits during channeling interrupts the skill and inflicts a 6-second stun on Viper. This is the central risk of the kit — Viper must be protected at all costs.
Since Viper cannot auto-attack, his entire contribution comes from maintaining his channel. Every second of uninterrupted channeling provides healing, DR stacking, and debuffs to the team.
Recommended Card
Best: 
Acid Monster (★4, Mage)
| Star | Passive |
|---|---|
| ★1 | +500 Poison DMG |
| ★2 | +10-70% Poison Amp |
| ★3 | Poison hits gain crit rate and crit DMG |
| ★4 | -40% HP (downside) offset by Viper's backline safety |
Synergy: Acid Monster provides massive poison ATK and amp, which directly scales viper bounce damage AND Tier 1 healing bonus. The HP penalty is manageable because Viper should never be in the front line taking damage.
Alternative: 
Gem Spider (★4, Mage)
| Star | Passive |
|---|---|
| ★1 | Per skill cast: +5% Skill DMG stack (30s, max 20 stacks) |
| ★4 | Fireball Chain multi-triggers |
Gem Spider's skill DMG stacking synergizes with Viper's constant channeling. While the Fireball Chain passive is wasted, the +100% skill DMG at max stacks is substantial.
Budget: 
Ladybug (★3, All)
| Star | Passive |
|---|---|
| ★1 | Auto-attacks apply poison (50% poison DMG/sec, 5s) |
| ★3 | Enhanced poison application |
The auto-attack poison passive is wasted on Viper (he cannot auto-attack), but the base poison stats on the card still provide value. Use only as a placeholder until Acid Monster is obtained.
Gem Setup
Weapon / Ring Gems (Type 1 — Offensive, 6 sockets total)
| Equipment | Socket 1 | Socket 2 | Socket 3 | Why |
|---|---|---|---|---|
| Weapon |  Jadeite (Poison) |
Jadeite (Poison) |
Jadeite (Poison) |
Poison ATK scales viper DMG + Tier 1 healing bonus |
| Ring | Jadeite (Poison) |
Jadeite (Poison) |
 Ruby (ATK) |
1 Ruby for base ATK to boost Tier 0 healing (heals 10% of ATK) |
Why 5 Jadeite + 1 Ruby? Tier 0 heals based on raw ATK, not poison ATK. One Ruby ensures the heal-per-second is meaningful. The remaining 5 Jadeite maximize poison scaling for both damage and the Tier 1 healing bonus multiplier.
Armor / Amulet Gems (Type 2 — Defensive, 6 sockets total)
| Equipment | Socket 1 | Socket 2 | Socket 3 | Why |
|---|---|---|---|---|
| Armor |  Emerald (HP) |
Emerald (HP) |
 Diamond (All Resist) |
HP for surviving stray hits, Diamond for Abyss elemental coverage |
| Amulet | Emerald (HP) |
Emerald (HP) |
Diamond (All Resist) |
Viper must survive — dead Viper means zero team support |
Why prioritize survivability over more offense? Viper's value is entirely in staying alive and channeling. If he dies, the team loses healing, DR stacks, DMG stacks, and debuffs simultaneously. Every defensive gem is insurance on your team's most important buff source.
Equipment Affixes to Target
Weapon
| Priority | Affix | Why |
|---|---|---|
| 1 | Poison DMG (Toxic/Venomous) | Direct poison scaling — also boosts Tier 1 healing |
| 2 | ATK% | Multiplies base ATK for Tier 0 healing |
| 3 | Skill DMG% | Boosts viper channel damage |
Armor
| Priority | Affix | Why |
|---|---|---|
| 1 | HP flat | Raw survivability — Viper must stay alive |
| 2 | DEF% | Damage mitigation to reduce interrupt risk |
| 3 | DR% | Flat damage reduction |
| 4 | Poison ATK | Bonus healing via Tier 1 even on armor |
Skill Tree Recommendations
All four tiers are mandatory with no branching, but the unlock priority matters for progression:
- Tier 0 (Viper Aura) — Unlocks team healing. Viper becomes a healer immediately.
- Tier 1 (Voodoo Medicine) — Poison ATK now boosts healing. Start stacking Jadeite gems.
- Tier 2 (Viper Protection) — The team-defining mechanic. DR + DMG stacking transforms team survivability and damage.
- Tier 3 (Heavy Curse) — Interrupt threshold increase + enemy debuffs. Quality of life and offensive support.