Fist of the North Star: Ken's Rage

As explained in the Game Basics section (see Roadmap), SMs are activated by pressing when you have at least one Spirit Reserve bar available. The best SM by far is Jagi's Iron Blast that has a 2/4 damage rating, has a 180 degree range and costs 1 Spirit Reserve.

An alternative is Kenshiro's Heavenly Destruction, 3/4 damage rating with 360 degree range but costs a whopping 3 Spirit Reserves. In Dream Modes you can run up to enemy bases, get in the midst of the group of enemies that spawn then unleash your fury on them.