1 Ab: Definitely not a damage-dealing ability. Increase the max number of affected opponents to 20, increase the speed.
2 Ab: Either reduce the cost to 0, or remove the health of Merulina and add energy consumption for each meter passed. Increase the speed of the activation animation (jump to Merulina).
3 Ab: A simple and useless ability, a replacement for helminth, move on...
4 Ab: Definitely needs a duration. When you hold the button, a maelstrom is formed for 8 seconds. Premature reactivation will cause an explosion.