Electromagnetic Scrambler

As an action, a crewmember may choose up to three ships that you can see within 300 feet to make Wisdom saving throws (DC = 8 + prof. bonus + ship's charisma modifier). The first time each turn a target that fails this saving throw makes an attack roll or a saving throw for up to a minute until the ability ends, the target must roll a d4 and subtract the number rolled from the attack roll or saving throw. The effects of this feature last until the beginning of your next turn unless the crewmember uses a bonus action to maintain it. This feature can be used a number of times equal to your ship's tier (a minimum of once). All expended uses are regained when the ship recharges.