The only real functionality is related to mana generation: Any mana generated by snow permanents counts as snow mana
For only two mana, when this goblin pirate enters the battlefield, its controller creates a number of treasure tokens equal to the number of artifacts and enchantments each of its owner's opponent's control
The first level allows you to have all of the cards you could ever want in your hand, and the second level is a Divination that draws a couple cards
Spells can also be used to boost minions or perform various other abilities
It was banned just days after it was printed, after all, thanks to its ability to counter your own spell and spin into something like Emrakul or Ulamog for free, usually on Turn 1 or 2
Conflux was the second set in the Alara block and didn't introduce too many novelties as far as keywords and game mechanics go, but it did bring a radical shift in how we collect all types of MTG cards in every set