Alarm Clock

This ingenious device of gnomish invention can sense incoming danger. When activated by an attuned character, the user gains the benefits of the Alert feat for one minute: You gain a +5 bonus to initiative. You can't be surprised while you are conscious. Other creatures don’t gain advantage on attack rolls against you as a result of being unseen by you. After being used, it cannot be used again until after a long rest.

Notes: Bonus: Initiative