Possible Clues:

• Nationalistic winter convention for those hunted in major sports event
• Gym sample I adulterated with 50% of coke, in major sporting event
• International sports meeting
• Kind of torch for beastly types at school sporting event
• Come with a gymslip prepared for sporting festival
• A gym complies with arrangement for sporting event
• International sporting event
• Two thousand and twelve London event
• Four-yearly event
• Employs magic cast in international event