Bubble
From Worms Knowledge Base
Bubble will protect a worm against 20% of the damage it receives. The bubble will disappear only when someone damage it, so it can exists for many turns. If a worm is already in a bubble and the weapon is used again, the protection will be 40%, if 3 times 60%, etc. It cannot be used more than 5 times (100% of the protection).
Might be inspired by the Bubble Trouble from Worms 4, an autonomous utility item that can create a bubble that protects the worm inside from launched attacks. While the attacks like bazooka, thrown grenade, artillery strike or shotgun cannot damage what's inside the bubble, the worms can simply walk into the bubble and place a mine inside or something. The animals can also simply walk into the bubble, like sheep, granny or a skunk, as long as they are not in a "projectile mode" (as in, a walking supersheep and mole can enter the bubble but flying supersheep and jumped mole would explode on contact with the bubble).
Suggested synergy: The skunk attack is not affected by the wind when inside of the bubble, making it easier to poison the worms on the inside.