The Tick Bomb looks like a steel orb 3 inches in diameter. with a clockwork mechanism on one side. 

The clockwork mechanism has a timer on the top. You may use a bonus action to set it from 6-60 seconds. While counting down the Tick Bomb makes a loud ticking sound.

The Tick Bomb can be thrown up to 60ft away.

When the timer reaches 0, the Tick Bomb detonates dealing 4d6 piercing damage and 3d6 fire damage in a 30ft sphere. 

Notes: Damage: Fire, Damage: Piercing