With undying creatures, the -1/-1 counter cancels the +1/+1 counter on return, creating repeatable loops
Beyond card images, there's a world of interesting AI/ML applications with Magic, like what others have worked on for drafting, deck optimization, and game play
As long as the total adds up to at least six, you will have satisfied the requirements of the card
With so much that allows you to increase the damaging power of the 3/3 that you get for 4 mana but for only 1 white mana you can get 2 life and you don't have to play both halves of this card if you don't want to or have the mana to
Eventually, someone figured out something rather powerful to do with the Mask: Cast Phyrexian Dreadnaught
Amazing card which I will be picking highly