Keep MythicMobs test summons inside an arena boundary
A custom summon can escape its encounter through a broad target location or repeated skill. Test the location selection and count limits before opening the arena to players.
Check the installed content
MythicMobs separates mob definitions, skills, targeters and triggers. Keep the internal IDs stable while testing a behaviour change; changing a display name does not require replacing the mob ID. Use documentation for your installed MythicMobs release.
Work through the change
- Choose a staging arena with clear edges and record the permitted summon positions. Keep natural spawning and valuable drops disabled for the test definitions.
- Inspect the targeter used by each summoning skill. Check whether it selects the caster, a player location or a set of locations in a radius.
- Trigger one summon with a player at the centre, then at each arena edge. Count entities and note their starting positions before allowing combat movement.
- Add the planned combat triggers one at a time. Test what happens when the target leaves the arena or disconnects, using only conditions supported by your installed release.
Verify the result
Each summon should begin at an intended location and the encounter should stop creating new entities when its target or lifecycle condition ends. Record the highest observed entity count during the test.
If the result differs
If summons appear outside, inspect target offsets and location filters. If positions are correct but entities later escape, investigate movement and arena design separately from the spawn target.
Keep a recovery path
Remove the disposable test encounter and restore its former skill reference if placement is uncertain. Avoid global entity-clear commands; keep a world recovery copy before adding summons that can damage blocks.
References and related help
Check the maintainer reference: MythicMobs documentation, MythicMobs documentation.
Before changing live data, read how to keep a completed recovery copy. For startup errors, use the log collection guide.