Yamato

Evocation Cast Time: 1 Action Range: 30 feet Components: S, M (a small strip of paper) Duration: 10 minutes or until detonated You place a magical explosive tag on a surface or object. The tag can be detonated remotely (up to 100 feet away) and deals 4d8 fire damage in a 10-foot radius. You must use an action to detonate the tag. Your targets must succeed on an Intelligence saving throw to notice your tag in time, otherwise they will suffer the full brunt of the explosion.