Rack Sustain REX Build

DIRECTIVE: Inject · Seed Barrage · Bramble Volley · Tangling Growth

Data from build 21587608, updated 23 Sep 2026

Survivor

REX

Symbiotes

REX builds · switch build

Rack Sustain

HardTankLate gameRisky

Seed Barrage, Bramble Volley and Tangling Growth spend 15%, 20% and 25% of your current health. The last two heal per enemy hit, and Rejuvenation Rack doubles that. Health becomes a currency you earn back at a profit.

Loadout

PrimaryM1DIRECTIVE: Inject
SecondaryM2Seed Barrage
UtilityShiftBramble Volley
SpecialRTangling Growth

Equipment

Why the core items

Rejuvenation RackDoubles every heal, including Bramble Volley's 10% of max health per target and Tangling Growth's ticks. Top pick for REX.
Tougher Times15% block, unaffected by luck, and it works on skill costs too.
Titanic KnurlA boss drop with 40 max health and 1.6 regeneration per second. The first legendary to grab for REX.
Leeching SeedHeals 1 per hit you land. One of REX's best items.

How to play it

Cast Tangling Growth on a big group. It heals about 1.5% of max health per second for every trapped enemy and the zone lasts 8 seconds.
Bramble Volley heals 10% of max health per target, so it pays for its 20% cost once it hits two enemies. Bison Steak raises that.
Armor shrinks the cost of Seed Barrage and Bramble Volley (15% becomes about 12.5% at base armor). It does not shrink Tangling Growth's 25%.