Akhrev, Confusion Master

0: Each opponent sacrifices a creature. If their total power combined was 4 or less, put 2 loyalty counters on Akhrev.
-4: You get an emblem with: 'Whenever a opponent sacrifices a permanent, that player loses 2 life and you gain 2 life.'
-9: You get an emblem with: 'At the beginning of your upkeep, search your graveyard and exile for the final nine and put them onto the battlefield.'