Marcus is able to conjure and manipulate sparks and smoke at will within a range of about 15 foot radius. This particular spell is small-time and more aesthetic than practical, but makes for good fine tuned practice and can create quick distractions in a fraught situation by temporary blinding a single target, or creating a distraction.
SPARK AND SHADOW;
Marcus summons a dense cloud of ash, effecting an area of a 30 foot radius, although dispersing towards the edges of that radius. Anyone caught in this cloud will be temporarily blinded and struggle to breathe, and anyone outside of it will have difficulty seeing anyone else within it. Marcus has minimal control over the cloud once it is summoned, and struggles to see through it and breathe himself.
FADE STEP;
Marcus is able to move through the Fade at a very fast rate at a short distance. The duration is about two seconds, the distance is around 20 feet. The practical effect is his physical body seems to resemble the same substance as a rush of smoke, allowing him a limited ability to pass through obstacles, i.e., 'through' people, trees, the edge of a wagon, but not through a solid wall. When passing through a creature, that creature suffers about the same as you'd expect from a big gust of dirty fire-smoke hitting you in the face, with a low amount of fire damage taken.
DARKER CORNERS;
When fighting at night, in dim lighting, in caves, etc, Marcus and allies are a little harder to see by their enemies, cloaked in a smokey illusion of light obscurity. Ranged and melee strikes against them in such environments have reduced accuracy.
TEPHRA; smoke.