although it could easily just be an unplayable card due to being frail and somewhat conditional and slow, it could also be very good because it offers such a potentially powerful effect and the Demon typing raises its floor somewhat as an Unholy Annex enabler
Building with Pirates I know what you're thinking: I'm going to run face-first into Pirate puns and dragged-out "arr" sounds, right
Im not 100% sold on Soul Diviner, since there arent too many good counters to plunder outside of planeswalkers and loyalty seems way too valuable to cash in for cards
Burn decks, which fear flooding after their second or third land, can potentially lower their land count by replacing some with modal lands/damage spells
Mox Jasper, Tarkir: Dragonstorms headliner card signaled a renaissance for Dragons in Magic: The Gathering
These decks have a relatively high likelihood of doing nothing in a game