It has Lifelink for the life gain, and can get bigger when stuff dies
Delve A spell with delve lets you exile any number of cards from your graveyard as you cast it, and each card exiled pays for one colorless mana of that spells casting cost
Attacking lets you loot, and with an evasive 4/4 body that shouldnt be too hard to manage, not to mention other attackers you might have at your disposal to really ramp up the looting
The mana value of a split card is the total cost of both sides, so this has a mana value of four
We also received swag: I came away with four trial decks to test out some more
It doesn't copy whether that creature was tapped or untapped, whether it had any counters on it or Auras and Equipment attached to it, and so on