Overloading a spell replaces the word target with the spell and changes it to each, converting it to a board wipe
On the surface, the Instant Fate of the Sun-Cryst is a pretty typical Magic card, paying five mana to destroy any non-land permanent
I might decide that I only have enough time to learn one archetype, so I might do a couple of practice drafts where I go for Jeskai Tempo
If you choose it as the artifact card, you could also put into your hand a creature card, and vice versa.
If you have a way to fill your graveyard with seven or more cards, you'll fill the battlefield with creatures faster than your opponent
It does unfortunately cost 6 mana, but itll only cost if you can get it into the graveyard via dredging another card or some other efficient route