Its distinguished from the oil slick foils because it makes the art of the card look like it's shifting, whereas the deep luster of the oil slick foil makes it look like the card has been soaked in glistening oil
So, if the attacking creature's strength overpowers the defending creature's toughness, and the defending creature's strength overpowers the attacking creature's toughness, both creatures die
Izzet decks will also have plenty of instants and sorceries to play if you need to draw cards or do some damage
Brine Shaman is nice because it gives the boost to any creature which can act in political ways during the game
Running Master Chef is a bit of a slow strategy for bulking your army to swing in for combat damage, but the buff can be expedited with supporting cards
is another one with things in the background of the text, this time those bent icicle-things, but it's basically a Counterspell effect that is a bit more involved in fucking around with your enemy's hand