Homework-Combos
Every Combo has a specific appearance - someone who has fought you before should be able to tell what Combo you're using if they've seen you use it before. It's like the Limit Break attacks in Final Fantasy - they all have the same "cinematic" as you use them.
Some examples are below:
God-Eating Cyclone
Charms: Archery Overwhelming, Trance of Unhesitating Speed, Ghost-Eating Technique
Description: Six brilliant white lights appear around Cerin's castemark, before they fly out into a wide ring. He plucks them one at a time, drawing them across his bow as arrows of light. They fly onwards, striking straight and true.
Terrible Iron Bear Stance
Charms: Martial Arts Overwhelming, Fists of Iron, Iron Skin Concentration
Description: Midday Snow kiais, and his anima flares, the massive snow-white, golden-eyed bear surrounded by a blizzard manifesting to roar along with him. He strikes, and for the split-second before the blow lands, everything becomes silent. As the strike lands, there is the sound of iron-on-iron. When he blocks, he slams his arms into oncoming attacks, causing the sound of iron-on-iron and showers of cold, white frost-sparks.
Hands Guided by the Sun Technique
Charms: Medicine Overwhelming, Wound-Mending Care Technique, Instant Treatment Methodology
Description: Alder's anima bathes her patient in the cool colors of dusk, and her castemark burns white hot. The light from her castemark reflects off of the most eggregious pains there, the blood turning reflective and golden in her anima, and with a few deft touches of first needle, then bandages, the wounds are bound. Then, her anima flares totemic as the blood shifts from gold to the reflective quality of diamonds and then disappears, taking the wounds with it.