Rand-Flak
Brain-Flak is an "Turing-tarpit", e.g. a language which can, in theory compute anything, but in reality is very inconvenient and painful to use. It was heavily inspired by Brainf**k, the original turing-tarpit.
If you are not familiar with Brain-Flak, you should check that out here.
Rand-flak is a variation of Brain-Flak that adds one new nilad and one new monad so that it can compete in challenges requiring non-deterministic output. The two new atoms are:
/\
Evaluates to 0 or 1 randomly, and/...\
Evaluates to a random number in the range[0, abs(n)]
, where n is the value of the snippet inside.