Reasonable Doubt I can't pass the opportunity to say I have Reasonable Doubts about this one but, hey, Make Disappear (which is another murder-related card as flavor goes) is a 4x staple in some Standard decks
When Black Vise was restricted just before the first Pro Tour, Necropotence began to gain traction
If multiple removal-heavy decks like Jund, Mardu Pyromancer, and Jeskai Control find homes in this brave new Modern world, I could see this cards stock going up considerably
It's a fine mechanic, sort of gives you a intro creature and a payoff into something else
For the sake of synergy, we probably want that ability to be very impactful and expensive, or we want a commander to further incentivize the activated abilities were using on our other cards
Oh, and its removal and a potential win condition