The Pea Gatling is very powerful when trying to shoot someone from a good distance but it is very risky at the same time as you cannot move while shooting. It is best recommended to use this on safe camping spots where no one can attack you. Never root in the middle of the battle or otherwise you would be an extremely easy target. If you have nothing to shoot, do not be afraid to press the ability again to unroot yourself. Try not to use this ability for close combat as moving spells can dodge it easily.