*Ding! 1 million credits are deducted. You purchased the "No touch" skill.
"No touch" skill is an automatic defensive passive ability, which can be toggled on/off to activate or deactivate at any time. The skill's ability is what its title says. Upon being activated, the user cannot be touched by anyone else physically. Whoever comes within the range shall be pushed away by an invisible force.
That means Mark cannot be harmed physically. However, the range attacks still work though. Another problem is that he cannot exempt the allies. Even they are affected by this skill.
And that's where the toggle switch is needed.
Mark never had plans on activating this skill unless it is in an emergency but since he was already spending millions of gold coins and is still far away from his goal of making the missile defense system a divine weapon, he thought he might as well get what he wants.