In a large bowl, combine the oats, cashews, sesame seeds, sunflower seeds, pumpkin seeds, salt, paprika, and cumin. Stir in the olive oil, agave, and flax-water mixture. Transfer the mixture to the baking sheet and bake until fragrant and golden, about 30 minutes, stirring once halfway through. Cool completely on the baking sheet, then store the granola in an airtight container at room temperature.