An obvious choice could be to use cards from Zombie, Vampire, Skull servant or Ghostrick archetypes but there are also many other series with very good spooky cards
The major issue with Sower is that you can kill it easily, thus getting your stuff back
The upcoming Phyrexia: All Will Be One set for Magic: The Gathering is introducing the Oil Counter keyword to the game, which acts differently for each card that possesses it
And if youre lucky enough to own a card like the Ho-Oh GX from the Shining Legends expansion, you could be looking at a card worth upwards of $100
The best part about this is we havent even attacked yet, meaning once Archangel of Thune does damage, our creatures are receiving another pump
From that moment onwards, Spellbook would recycle their used Spellbooks and strengthen their board because more and more spells had been played until it reached a point that was unbearable for any deck