0-README.md

1. Open your browser console (with F12)
2. Copy/Paste the script in the console input
3. Write startSacrificingMinions(), press enter and enjoy :P

sacrifice-minions.js

var sacrificingMinionsIntervalId;
var sacrificingMinionsCauldron = document.getElementById('MainClick');

function startSacrificingMinions(minionPerSecond) {
    minionPerSecond = typeof minionPerSecond != 'number' || minionPerSecond < 0
        ? 42
        : minionPerSecond;

    sacrificingMinionsIntervalId = setInterval(function () {
        sacrificingMinionsCauldron.click();
    }, 1000 / minionPerSecond);
}

function stopSacrificingMinions() {
    clearInterval(sacrificingMinionsIntervalId);
    sacrificingMinionsIntervalId = null;
}