When placed next to each other, like a jigsaw puzzle, the four pieces form the complete colour artwork by Nicholas Kole, surrounded by concept drawings for the cards artwork
The big emo with the bigger sword, Sephiroth's front face is weirdly constrained for such a major character
Once you get Delirium online, you end up with a 3/3 flyers that attacks each combat if able, which can help provide pressure and get you your attack and damage triggers
For folks that complain about lack of white card draw, you can even draw four cards with Skullclamp
Dividing the damage is interesting too, because its shield bounces between targets, so your 7+ damage isnt wasted on a 2/2
Kaldheim brings with it new keywords such as Foretell, which allows you to exile cards from your hand to play them later for slightly cheaper, and Boast - which is a lot like the Raid mechanic from Tarkir, but this time around you can use special effects on cards for a different cost