For instance, you could use Tinker Bell Most Helpful once, then play another of her, targeting the same card, and the Keyword-attaching part would fail
I choose creatures every turn and continue to mill a player for 24 or so while they have to make a real decision about whether they want to play new spells or attempt to attack into my army of 1/3s
Transforming Etali, Primal Conqueror is mostly a last resort though, because why would you not want to keep casting Etali, Primal Conqueror to play all of your opponents' decks
An easy way to mill yourself out is Demonic Consultation
This set of fetch lands are going to be the most expensive of the bunch, aside from maybe Prismatic Vista (mentioned below)
Havengul Lich 4 Printings and their Prices Track Havengul Lich Prices Free collection tools for Magic: the Gathering