In a large bowl, add the cannellini beans, black beans and chickpeas. Gently mash about half of beans but leave the other half the of the beans whole. Add the cooled veggie mixture to the beans along with the oats, bread crumbs, parsley, smoked paprika, chili powder, oregano, red chili flakes, cumin, celery seed, salt, black pepper and eggs. Thoroughly combine mixture.