I really cant see this demon doing much in any format, so expect the price to plummet rather like this flier will without protection
This is a card with a lot of ways to make your opponent hurt
The insect Mazirek, Kraul Death Priest is a Golgari commander who ties all of this together, putting a +1/+1 counter on each creature you control whenever an opponent sacrifices a permanent
From doubling ETB's like Kefka, Court Mage's trigger to doubling cast triggers like the Black Wizards from Kuja, Genome Sorcerer, this guy does it all
(If unsolved, solve at the beginning of your end step.) Solved If one or more tokens would be created under your control, those tokens plus a Clue token are created instead
This deck is careful not to run too many creatures with Shadow, however