Alchemical Hydra
From the Pantheon Wiki
A powerful hydra that shifts through four colour-coded combat phases — Blue (Magic), Red (Ranged), Green (Melee), and Rainbow. Requires 95 Slayer and is one of the best slayer-only money-makers.
Tip: Stand on the correct tile to redirect its special attack pools. Switch prayer when the Hydra changes colour — it always signals the switch by pausing briefly.
Overview
A powerful hydra that shifts through four colour-coded combat phases — Blue (Magic), Red (Ranged), Green (Melee), and Rainbow. Requires 95 Slayer and is one of the best slayer-only money-makers. It has a combat level of 426.
Notable drops
- Hydra's Claw (Brimstone Ring / Hydra Maul)
- Hydra Tail
- Hydra's Eye
- Hydra's Fang
- Hydra's Heart
- Ikkle Hydra Pet
Strategy guide
Recommended difficulty: Hard.
| Recommended stats | 95 Slayer (required), 80+ Ranged, 70+ Prayer |
| Recommended gear |
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| Suggested inventory |
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Mechanics
| # | Phase | Description |
|---|---|---|
| 1 | Blue Phase (Magic Attack) | The Hydra starts in Blue phase and uses Magic attacks. Activate Protect from Magic. Stand on the chemical pool tile to redirect its poison pool special away from you. The chemical tile is marked — step on it before the special fires. |
| 2 | Red Phase (Ranged Attack) | After Blue phase ends, the Hydra turns red and switches to Ranged attacks. Activate Protect from Missiles. Find the new chemical pool tile for this phase and position yourself on it to redirect the poison cloud. |
| 3 | Green Phase (Melee Attack) | The Hydra uses Melee in this phase and spits lightning. Keep distance — it can hit diagonally. The chemical pool tile shifts again. Lightning special leaves a damage trail on the ground — step around it. |
| 4 | Rainbow Phase (Final) | The Hydra enters its final form, cycling through all attack styles rapidly. No more chemical pool mechanic. Lightning attacks become more frequent. Burn it down with max DPS — prayer flicking is optimal here. |
Tips & tricks
- Standing on the chemical pool tile is the core mechanic — it redirects the poison special away from you.
- Each phase transitions when the Hydra pauses and flashes the next colour — that is your prayer switch signal.
- The chemical tile changes position between phases — reposition immediately when a new phase begins.
- Lightning trails linger on the ground and deal damage — path around them, not through them.
- Slayer helm (imbued) on task is slightly better than Anguish at most stat levels.
- Never stand adjacent to the Hydra in Green phase — it can Melee attack for 40+.
Combat info
See the full Alchemical Hydra monster page for stats, attack styles, weaknesses, and the complete drop table.