simulation

const SIMULATIONS = 1000000;
let villainDeaths = 0;

for (let i = 0; i < SIMULATIONS; i++) {
  let villainLives = 8;
  let minionLives = [2, 6, 5];
  for (let j = 0; j < 5; j++) {
    let targets = [];

    if (villainLives > 0) {
      targets.push(() => villainLives -= 2);
    }

    minionLives.forEach((lives, index) => {
      if (lives > 0) {
        targets.push(() => minionLives[index] -= 2);
      }
    });

    let randomTarget = targets[Math.floor(Math.random() * targets.length)];
    randomTarget();
  }

  if (villainLives <= 0) {
    villainDeaths++;
  }
}

console.log(`The Villain died in ${villainDeaths} out of ${SIMULATIONS} simulations.`);
console.log(`Estimated probability: ${villainDeaths / SIMULATIONS}`);