Born to a family of Aboriginal wizards with a long line going back centuries, before even the white man came to Australia, he was taught the ways of magic from his family at a young age. His father and mother, not trusting the conventional structure of wizarding schools decided to keep him home and teach instead. This being he spent most of his time in the brush, learning the plants and animals, bonding with them as he grew. This connection allowed him to flourish in their teachings, the lessons he had with his grandfather, who had spent time and graduated from Tallygarunga back in the day, was insistent that he learn how to cast without the need of a wand, showing him tricks and lessons. These lessons took easy, he was doing rudimentary wandless magic at an early age of six, not getting his wand until he was already in his teens.
When he turned sixteen his grandfather had enough of the homeschooling, putting his foot down that Illuka needed to spend time with other children, learn the way of the world from them, and learn lessons that the family couldn't teach. This was fought at first, before finally Luka was admitted to the school. The first few months he was there he had trouble making friends, already ahead of many of the students he was in class with. As the year progressed he managed to make friends, learning casual skills and how to deal with people. This helped him to learn how to better use his wandless magic, allowing for his emotions to be less confused, less crowded.
When he graduated he took off from Australia, traveling the world for a few years. In his time abroad he studied education in muggle schools, learning the best way to teach, and how to hide his magic. Having had little interaction with Muggles as he was raised, this posed a bit of a difficulty for him.
When he turned thirty Luka returned to Australia, spending time Queensland, a few months in New South Wales. Returning to the bush of Nari he settled down, taking time for himself, not wanting to do much but live on his families land.
Now Forty he grew bored with his sedentary life, wanting something new he approached Tallygarunga with a proposition. He would teach wandless magic to the students if he was allowed to teach it his way. Sure it was late in term, but he was bored and saw the school needed the help.This was a chance to make his grandfather proud, to spread his knowledge, his teachings, and help the younger generations.