Thunder of Heaven and Earth

Haze of Rumbling Heavens (朧・地天轟雷) is an Art used by Gazel Dwargo.

Abilities
Using Haze, the user conceals their presence to the point where not even Magic Sense can detect them. They then use Rumbling of Heaven and Earth, a slash from underneath, immediately following it up with a downward strike.

Trivia

 * In That Time I Got Reincarnated as a Slime: Isekai Memories, the "Gazel Dwargo [King of an Armed Nation]" unit uses this as a Secret Skill.