Nice looking control deck you have going on here. The only thing I would change is to take out Puppet Strings for Magewright's Stone since its untap cost is one mana cheaper. Also, Minamo, School at Water's Edge allows you to untap Dralnu and it's a land, so it won't take up a nonland spot in your deck. And if you're going to run Cabal Coffers in a deck like this, Urborg, Tomb of Yawgmoth is a must. Lastly, I'm curious as to what a fellow Dralnu player such as yourself thinks of my Dralnu deck.