Best Catch A Monster Mutations Guide

Pick the mutation based on the monster's job

Do not start by asking which mutation sounds rarest. Start by asking what the monster needs to do on your team. Current Catch A Monster mutation references and Cyclone9's Short point players toward four different roles: Huge for broad stat value, Shiny and Bloodlit for crit builds, and Fairy for defensive support.

• Huge is the broad carry choice.
• Shiny and Bloodlit are the crit-build choices.
• Fairy is the tanky support choice.

Use Huge when you want the safest broad upgrade

Huge is the easiest mutation to justify on a monster you already know you want to keep. Cyclone9's Short gives Huge the biggest pure stat bump of the group because it improves both damage and bulk at the same time instead of pushing only one build path.

• Huge adds 40% Attack.
• Huge adds 40% HP.
• Use Huge when you do not need to force a crit build.

Use Shiny when crit rate matters more than bulk

Shiny is the mutation for a monster that wins by landing more critical hits, not by becoming tankier. Cyclone9's Short gives it a smaller raw Attack bump than Huge, but the crit-rate gain is the real reason to care.

• Shiny adds 10% Attack.
• Shiny adds 30% crit rate.
• Use Shiny on the pet that already feels like a real damage dealer.

Use Bloodlit when you are building around crit bursts

Bloodlit is strongest when you already care about critical hits and want them to hit much harder. CAM Hub's current mutation guide and Cyclone9's Short both point toward the same role: Bloodlit belongs in the crit lane, not as a generic utility mutation.

• Bloodlit adds 10% crit rate.
• Bloodlit adds 100% crit damage.
• Bloodlit is the best partner for a Shiny-style crit build.

Use Fairy for survival and faster rotations

Fairy is the mutation to choose when the monster's value comes from surviving, supporting, or casting more often. Cyclone9's Short shows 25% less damage taken, while CAM Hub's current mutation page frames Fairy as the defensive support mutation with faster ability rotations.

• Fairy gives 25% less damage taken in Cyclone9's Short.
• Fairy is the safest defensive mutation for support-style monsters.
• Use the current in-game tooltip when you want to min-max exact cooldown wording.

Decide the mutation first, then farm the fragments

The most efficient route is to choose the role first and farm second. Use the Short or this guide to decide what your build actually needs, then move into Cyclone9's Mutation Extractor guide and weather-focused patch routes so you do not waste fragment farming on a mutation that does not fit the monster.

• Use the Mutation Extractor guide for fragment farming.
• Use Patch 0.35 when mutation weather is stronger.
• Use build pages like Motovok or Crystalwing when you are choosing a final mutation target.

Treat X mutations as late-game upgrades

Patch 0.42 adds Ultra Variant Booster and upgraded X mutations, but Cyclone9's patch video frames the booster as scarce. Use it only after the base monster, role, and mutation plan are already clear, especially on expensive builds such as Psyberion.