With some scrying spells and a Sensei's Divining Top, you can set up the top of your library for exactly the cards you need and cast them all in a cascade of magic thatll leave your foes stunned
Theres not really a whole lot to say about kobolds in terms of mechanics
If the discard was something more universal like lands or blue cards instead of artifacts, or always just one card, while retaining its instant cost it would probably get more play than Fact or Fiction, mostly for occupying a slot on the curve in less demand
Its still listed as a Power Pack high-value card for someone else to chase now
The most recent sold listing is a BGS 9.5 for $516 in August
As Lokhust Heavy Destroyer's triggered ability resolves, first the player whose turn it is chooses a creature to sacrifice, then each other player in turn order does the same knowing the choices made before them