LEGO® NINJAGO® play set with Dragon Mech and 6 minifigures LEGO® NINJAGO® Wyldfyre's Transforming Dragon Mech (71868) lets you recreate the action scenes from the 4th season of the NINJAGO® Dragons Rising TV series. The large toy dragon is quickly transformed into a formidable mech figure armed with a large sword. Children ages 9 and up can recreate their favourite episodes with 6 minifigures: ninjas Wyldfyre, Arin and Sora, and villains Empress Beatrix, Ice Monster and Acid Monster.