AI is able now to make simple decisions like "Chosen Discard", "Chosen Sacrifice" and so on. This leads to a massive card package which contains many powerful and much beloved cards like the Eldrazi creatures:
[card]
name=Kozilek, Butcher of Truth
autostack=draw:4 controller
autograveyard=moveTo(ownerlibrary) && shuffle
auto=@combat(attacking) source(this):name(Annihilate) ability$!name(sacrifice 4 permanents) notatarget(<4>*|mybattlefield) sacrifice!$ opponent
text=When you cast Kozilek, Butcher of Truth, draw four cards. -- Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) -- When Kozilek is put into a graveyard from anywhere, its owner shuffles his or her graveyard into his or her library.
mana={10}
type=Legendary Creature
subtype=Eldrazi
power=12
toughness=12
[/card]
Tests will follow.
Card list in the first comment. Have fun!