Giant Insect 5e
Level 4 Transmutation
Giant Insect is a level 4 transmutation spell in D&D 5e. Casting time: 1 action, range: 30 feet, duration: Concentration, up to 10 minutes. Available to Druid.
Casting Time
1 action
Range
30 feet
Duration
Concentration, up to 10 minutes
Components
V, S
You transform up to ten centipedes, three spiders, five wasps, or one scorpion within range into giant versions of their natural forms for the duration. A centipede becomes a giant centipede, a spider becomes a giant spider, a wasp becomes a giant wasp, and a scorpion becomes a giant scorpion.
Each creature obeys your verbal commands, and in combat, they act on your turn each round. The GM has the statistics for these creatures and resolves their actions and movement.
A creature remains in its giant size for the duration, until it drops to 0 hit points, or until you use an action to dismiss the effect on it.
The GM might allow you to choose different targets. For example, if you transform a bee, its giant version might have the same statistics as a giant wasp.
Spellcasting & Tactical Insights
Action Economy
Standard Action • Primary turn investment.
Concentration
Requires Concentration (taking damage triggers DC 10 / half-damage Con saves).
School Role
Transmutation: Alters properties of physical matter or creatures. Provides flexible buffs, environmental reshaping, and mobility.
Frequently Asked Questions
What level spell is Giant Insect and what school does it belong to?
Giant Insect is a Level 4 spell belonging to the school of Transmutation in D&D 5e.
What are the casting time, range, and duration of Giant Insect?
Giant Insect has a casting time of 1 action, range of 30 feet, and duration of Concentration, up to 10 minutes.
Does Giant Insect require concentration or ritual casting?
Yes, Giant Insect requires Concentration. It cannot be cast as a ritual.
Use Giant Insect in your campaign
Dungeon Manager lets you add Giant Insect to your characters, reference it during sessions, and track spell slots across encounters — all free.