SP Iso Build Guide — Sand Beast Summoner — Abyss Hunters

Star	Branch	Effect
T0	Hibernation Aura	During Hibernation: enemies in radius 3: -35% ATK speed, -35% move speed
T1	Reactive Sand	Hits received spawn sand balls (300% DMG, -1s CD each). 25% blind chance (2s)
T2	Sand Pillar	Sand Beasts: every 8s, 600% DMG + sand prison (immobilize, -100% DEF, 3.5s)
T3	Beast Enhancement	Beasts inherit 100% crit. Beast ATK speed = 10% of Iso's DEF. Iso fires 250% sand ball/sec

Skill: Sand Core Beast

Auto-attack: Fire a sand ball for 300% DMG.

Active Skill: Summon a Sand Beast at target location (max 2). Sand Beast inherits 100% ATK/DEF, deals 300% auto DMG, lasts 60 seconds.

After summoning, Iso enters Hibernation — cannot attack, move, or use skills. Gains +300% DEF and 25% DR for 30 seconds.

The core loop is: summon beasts, enter hibernation, let beasts and reactive effects do the work while Iso tanks passively.

Recommended Card

Best: Mars (★4, All)

Star	Passive
★1	Summons inherit 1.25x stats
★2	Summons gain +15-20% DMG and DR
★4	+0-2 summon limit

Synergy: Mars directly amplifies Sand Beasts — 1.25x stat inheritance means they gain 125% of Iso's ATK/DEF instead of 100%. The extra summon limit at 4-star allows a third Sand Beast. The DR boost keeps beasts alive longer.

Alternative: Demon Squad (★3, All)

Star	Passive
★1	Summons: +30% ATK Speed
★2	Summons: +15% Crit
★3	Summons: +5% DMG

Demon Squad provides excellent summon-specific buffs at a lower rarity. The ATK speed bonus stacks with the DEF-based ATK speed from Tier 3 for very fast Sand Beast attacks.

Budget: Golem (★3, All)

Star	Passive
★1	+20% DEF
★2	+20% Poison Resist
★3	+15% DR

Golem's DEF bonus directly scales Sand Beast ATK speed via Tier 3 while making Iso even tankier during Hibernation. The DR stacks with Hibernation's built-in 25% DR.

Gem Setup

Weapon / Ring Gems (Type 1 — Offensive, 6 sockets total)

Equipment	Socket 1	Socket 2	Socket 3	Why
Weapon	Ruby (ATK)	Ruby (ATK)	Ruby (ATK)	Sand Beasts inherit 100% ATK — Ruby directly scales beast damage
Ring	Ruby (ATK)	Ruby (ATK)	Ruby (ATK)	More ATK = stronger Sand Beast hits and Sand Pillar bursts

Why full Ruby? Iso's Sand Beasts inherit raw ATK, not elemental stats. Ruby gems give the most direct increase to Sand Beast damage output. Elemental gems are wasted because Sand Beast attacks deal physical damage.

Armor / Amulet Gems (Type 2 — Defensive, 6 sockets total)

Equipment	Socket 1	Socket 2	Socket 3	Why
Armor	Sapphire (DEF)	Sapphire (DEF)	Sapphire (DEF)	DEF = Sand Beast ATK speed via Tier 3, AND Hibernation survivability
Amulet	Sapphire (DEF)	Sapphire (DEF)	Emerald (HP)	1 Emerald for raw HP pool; rest DEF for beast scaling

Why Sapphire over Emerald? On most heroes, Emerald (HP) is the default defensive gem. Iso is different — his Tier 3 converts DEF into Sand Beast ATK speed. Every Sapphire gem simultaneously makes Iso tankier AND makes his beasts attack faster. DEF also scales the +300% DEF multiplier during Hibernation multiplicatively.

Equipment Affixes to Target

Weapon

Priority	Affix	Why
1	ATK%	Sand Beasts inherit ATK — multiplicative scaling
2	ATK flat	Direct ATK increase for beast inheritance
3	Crit Rate / Crit DMG	Tier 3 gives beasts 100% crit stat inheritance

Armor

Priority	Affix	Why
1	DEF%	Multiplicative with Hibernation's +300% DEF; scales beast ATK speed
2	DEF flat	Direct DEF for Tier 3 conversion
3	HP flat	Raw HP survivability
4	DR%	Stacks with Hibernation's 25% DR

Skill Tree Recommendations

All four tiers are mandatory with no branching, but the unlock priority matters for progression:

Tier 0 (Hibernation Aura) — Immediate utility. Iso becomes a passive debuff zone.
Tier 1 (Reactive Sand) — Getting hit now spawns counterattacks and reduces cooldowns. Iso starts contributing damage during Hibernation.
Tier 2 (Sand Pillar) — Sand Beasts gain hard CC. The -100% DEF prison creates burst windows for the team.
Tier 3 (Beast Enhancement) — DEF-to-ATK-speed conversion comes online. Start stacking Sapphire gems aggressively.

SP Iso — Sand Core Beast