watch 02:39 The Loop (Games) Do you like this video? An uncommon soul item needed for Gaster. Spawns every 30 minutes (1800 seconds) with a 1/10 (10%) chance of spawning. Doesn't play any music. One of the seven souls. Categories: Items Items:Undertale Undertale Non-Canon Common Community content is available under CC-BY-SA unless otherwise noted.