If the target creature is an illegal target as Deadly Embrace tries to resolve, it won't resolve and none of its effects will happen
It can also attack the graveyard quite effectively, so Ignis might be really annoying for the black/green decks to play against
move this card to that zone, then destroy all other cards in the column this card was in, the column it is now, and all columns between
There might not be as many Dark-type Pokemon to choose from but many of them can tilt the scales of a fight and give you victory
Thats fine if Commander wasnt a format that allowed to pick and chose these commanders, but at the end of the day the mechanic isnt going to function in Draft so its pointless to judge it in that scenario
Simply doubling the amount of life each opponent loses, Bloodletter of Aclazotz is obviously incredibly powerful