Egg of Flealia – Hollow Knight: Silksong Tool Guide
FULL-HEALTH SILK COST REDUCTION (4 → 3)
A Blue Tool that reduces Silk Skill cost from 4 to 3 while at full health. Earned via the Lost Fleas side quest in early game routing.
ACT 1
THE MARROW → GREYMOOR (Lost Fleas)
BLUE
EFFICIENCY
FULL-HEALTH
1
SLOTS
-1
SILK COST
IMPACT STATS
DAMAGE
10%
SURVIVAL
30%
MOBILITY
30%
UTILITY
70%
ECONOMY
60%
ACQUISITION
Method:Quest Reward
Vendor:Lost Fleas → Caravan moves to Greymoor
Cost:Complete quest steps
Requires:Trail's End → Silk & Soul; Cling Grip + Faydown Cloak
Start in The Marrow, collect 5 Lost Fleas to move the caravan to Greymoor, then claim Egg of Flealia from the caravan. Collecting all 30 boosts related upgrades.
DESCRIPTION
At full health, your Silk Skills cost 3 instead of 4. You lose the effect when hit; it returns when fully healed. Pairs well with passive healing or buffer tools to sustain cycles.
Maintain full-health to sustain 3-Silk cycles
Synergy: Plasmium Phial for buffer masks
Synergy: Weavelight for faster Silk gain
MECHANICS & EFFECTS
Trigger:Full health
Silk Cost:4 → 3 for Silk Skills
Upgrades:Tool Pouch & kits may increase efficiency/threshold
Best For:Exploration, safe casting, boss learned phases
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TRAP & CONTROL TOOLS COMPARISON
| Tool | Slots | Act | Damage | Utility | Economy | Notes |
|---|---|---|---|---|---|---|
| Egg of Flealia | 1 | 1 | 1/5 | 4/5 | 4/5 | Full-health Silk discount; sustain for efficiency |
| Flea Brew | 1 | 1 | 2/5 | 5/5 | 5/5 | Silk efficiency synergy; extend casting sequences |
| Plasmium Phial | 1 | 1 | 3/5 | 4/5 | 4/5 | Mask buffer helps keep full health active |