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ETHORA

Arcanus Bestiary

Spikes Guide

Spikes Guide

Spikes also work by placement — where the spikes appear on the body determines rarity and star cost.

How Spikes work

  • Pick a Spike Placement from the reference plate; rarity is set by the placement itself.
  • Spike Length / Type is a separate slot when applicable.

See the MYO Guide for the full star budget and how to stack costs.

Spike Placement Chart

Placement determines rarity
Arcanus spike placement chart
Spike Placement Chart — where spikes grow determines rarity and star cost. Each region on the chart is colour-coded by rarity — use the legend below to read it.

Rarity legend — match colours on the chart

Very CommonCommonUncommon★★Rare★★★Very Rare★★★★

Spinal and tail placements are Common; shoulder, joint, and facial spikes are Uncommon to Rare. Length is selected separately below.

Placement rarity reference

Blue zoneVery Common
Green zoneCommon
Yellow zoneUncommon
Red zoneRare

Cross-reference with the chart above to find each placement.

Rarity legend

Very CommonCommonUncommon★★Rare★★★Very Rare★★★★