Oak 

Throughout history, the Celts, Greeks, Romans, and practically all other important European nations and civilizations have revered the majestic oak tree. It has traditionally been associated with storm gods, thunder gods, and lightning gods. The oak is a sign of strength, regal power, resilience, and endurance because of its enormous size, expanse, and longevity.

Griffin 

The Griffin is a mythical creature with a lion’s body and eagle’s head and wings. The Griffin was regarded as a particularly powerful and magnificent beast. It was a divine protector and a symbol of divine might in ancient. The griffin symbol was associated with strength in Celtic mythology.