Mine, Flash

Unlike grenades, which explode shortly after being thrown, mines are designed to detonate once a specific trigger occurs. As an action, you can set a mine in an unoccupied space within 5 feet of you. When you set a mine, determine the circumstances under which the mine will detonate. For example, you can set the mine to detonate on a timer, when a creature enters the mine’s space, or under other specific circumstances (such as when a door opens or a vehicle activates). You can also rig the mine to detonate remotely using a remote detonator.

When detonated, a mine functions identically to the grenade it emulates.

Each creature within 10 feet makes a Constitution saving throw, and is blinded for 1 minute on a failure. A blinded creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.