Deux ex machina: 

-noun

• a god introduced into an ancient Greek or Roman play to resolve the entanglements of the plot.
• a person or thing (as in fiction or drama) that appears or as is introduced suddenly and unexpectedly to provide a contrived solution to an apparently insoluble difficulty.

Juice:

-noun

(noun, verb, juiced, juicing) 

• the natural fluid, fluid content, or liquid part that can be extracted from a plant or one of its parts, esp. of a fruit: orange juice
• essence, strength, or vitality: He's still full of the juice of life!
  
• slang: alcoholic liquor 
  

Juice ex machina