Mountusk — Catch a Monster Guide
Grass Mythic Tier A Healer
Last updated: 2026-07-09
Defeat Mountusk at the top of the mountain on Frost Isle. It drops the Sprout Egg, which hatches into Mountusk.
Overview
| Element | Grass |
|---|---|
| Rarity | Mythic |
| Tier (July 2026) | A — Healer |
| Best mode | Early Endless Spire |
| Drops | Sprout Egg, Spirit Branch Herb |
Where to Find Mountusk
Location: Frost Isle — mountain top
Defeat Mountusk at the top of the mountain on Frost Isle. It drops the Sprout Egg, which hatches into Mountusk.
Evolution
Four paths, each needing 10 Gildrock Bracers plus one gem: Frostusk (Ice Gem), Volctusk (Fire Gem), Terratops (Ground Gem), Titanusk (Secret — Grass Gem).
Materials: 10x Gildrock Bracer + 1 Refined Gem per evolution. Also drops Spirit Branch Herb.
Planning an evolution? Use the Evolution Calculator to check the full recipe and see which materials you still need.
Is Mountusk Worth Using?
Yes early on — Healing Pulse restores health to all pets in range, making Mountusk the best budget healer for early Spire floors. It falls off once you get Undine.
Team synergy: Run Mountusk as your healer behind Frostwyrm or Glazadon until you pull Undine from Rifts.
Alternatives: Undine, Titanusk (Secret evolution, keeps it relevant)
Mountusk FAQ
It's the second boss at the top of the Frost Isle mountain, next to Glazadon's arena. Defeat it for the Sprout Egg.
Titanusk (Secret tier) via 10 Gildrock Bracers + 1 Refined Grass Gem. All four evolutions are solid A-tier tanks though.
Yes for early and mid game — Healing Pulse (CD 6) heals your whole team in range. Replace it with Undine for endgame stun-support.