When you can play it the Cloud brings awesome power offering a pretty good representation of a Mind Twist, an Armageddon, a Wrath of God or a Fireball, often a couple of those things and almost always far worse for your opponent than you
If the exiled permanent was a commander, the tokens won't be commanders
In most cases, I will be referencing CGCs standards in this guide
There is definitely room for improvement, and I would argue you could go even lighter on the creatures, taking out some unnecessary ramp or even removing the Monarch mechanic entirely, and instead going with some additional enchantments or spells to really apply the pressure to your opponents
Put the exiled cards on the bottom in a random order.) Rebound (If you cast this spell from your hand, exile it as it resolves