By participating in one of these events, you'll receive a Despark or Culling Ritual promo card
Its best to avoid cards like Invasion of Karsus and Invasion of Tarkir , though, as the former deals damage to your own creatures and could wipe out your attacking forces, while the latter works best with a Dragon-centric deck, which is difficult to pull off in March of the Machines limited format
Partial matches like shiv drag will also provide results
While the standard player vs
Gogo copies exactly what was printed on the original creature, with the listed exception (unless that creature is copying something else or is a token
Older cards don't have a set code so, you need to know the symbol for each set to be able to tell on-sight, but a quick search over on Gatherer can help you out when youre not sure