Thinly slice the pointed cabbage and place it in a large mixing bowl.
Slice the radishes into thin rounds.
Julienne the carrot into thin strips.
Sprinkle the cabbage with 1/2 tsp salt and gently toss to soften the cabbage.
In a small bowl, combine the Greek yogurt, mayonnaise, mustard, lemon juice, minced garlic, pepper, chili flakes, agave syrup, and fresh dill. Mix well until all ingredients are fully combined.
Add the sliced radishes and julienned carrots to the cabbage.
Pour the creamy dressing over the vegetables and toss everything together until evenly coated.
Serve immediately or refrigerate for 30 minutes for the flavors to meld.