Hour of Devastation: mechanics

Hour of Devastation set is on the way, hence it is high time to introduce mechanics:

• Eternalize — a keyword ability which is very similar to Embalm. Eternalize can only be activated if the creature is in the graveyard. When activated, the card is exiled and creates a token copy of itself, except that it is a zombie in addition to its other creature types and monocolored black. Its power/toughness becomes 4/4. You can eternalize any time you could cast a sorcery. Many creatures with eternalize have abilities that get better because of their increased power. Each creature with eternalize has a corresponding token, that can be found in booster pack.
• Afflict — whenever a creature with this ability becomes blocked, defending player loses life equal to the Afflict value. It doesn't matter how many creatures block a creature with afflict; afflict triggers only once per combat at most.