Not everyone was in love with the upkeep cost of Lord of the Pit, even though Fallen Empires Breeding Pit made the cost seem easier to maintain, Sengir Vampire was a simple power flyer and if you played your cards right, easily pumpable
Third, it can make other players mad that they had to bounce and replay their things, too
Plenty of decks with black and green will want this effect, and if just like me your new goal is being able to pull off a Culling Ritual, floating 15, tap Deathbloom Ritualist, floating 30, Torment of Hailfire? play, then youre speaking my language
The set of cards also re-introduced energy counters and a basic cycle of full art lands
Its third chapter can be very impactful in a deck running a lot of artifacts and could possibly even be a finisher if youve got a big enough board state
Whenever an opponent activates an ability of an artifact they control, Avalanche of Sector 7 deals 1 damage to that player