The quick mana offered by Sol Ring can allow for explosive starts, and while it has long been a staple in the Commander format it is currently restricted in Vintage and banned in Legacy
So, for example, suppose you have a five-cost Marrow-Gnawer
7 Survey The Battlefield Building a deck and studying the intricacies of the available cards is crucial, however, if one does not understand how the battlefield works, all this background information will be for naught
Once you sort out the ones that have potential, you need to send them off for grading
One way to beat that is to overwhelm an Infect opponent with removal spells, but this is often card-intensive and forces you to keep mana open
Armageddon and Ravages of War are mechanical clones, so pick your poison