An Izzet Hidden Strings Nivmagus deck that uses Heroic and Cipher to try to overwhelm the opponent.
The idea is to get Trait Doctoring or Hidden Strings encoded on a creature, then get it through and trigger Heroes, Guttersnipes, and Young Pyromancers. Trait Doctoring basically doesn't do anything here (though it can fix your mana in a pinch), but you can let Nivmagus Elemental eat it, and it will still bring all of your Instant/Sorcery triggers online.
Hidden Strings is interesting, because it will be a free spell at worst, and it will trigger Heroic or let you drop extra 2-drops at best.
Cipher and Heroic is cool as well because all you have to do is target the creature when you cast the spell. It doesn't have to resolve. (I'm pretty sure)
Yup, that's the way it will work. It'll trigger, and then you can exile it with Nivmagus and you'll still have the trigger.