It's not just the 2
, it's also the fact that you hand out more Curses faster. The real problem here is that it drains 2 piles at once while also giving you
. It seems like the IGG rush except even worse because it drains itself. The right move might be just to buy this every single turn you can; if you do and your opponent doesn't; it ends up something like:
You: 3 Curses, 7 other dead cards, 8
Opponent: 7 Curses, 3 other dead cards
Just a random guess on the numbers... but you will have fewer Curses and more Vampirism. Then you just drain Estates or something for the win.