Ive got this lower on my personal list because I feel like its another Simic legendary creature with a powerful ability tied to game actions that you already want to do, and that just feels too easy and less interesting than other options
Embalmer's Tools As the name suggests, Embalmer's Tools goes well with the set's embalm mechanic, so decks heavy on embalm creatures will love this
Tribal Support There is only a single card ever printed that specifically supports Elephants: Elephant Graveyard
Venturing provides disparate effects that can be more than the sum of their costs
This White, Red, and Blue deck creates powerful Human-based synergies for you to take advantage of
There are some cool advantages of Karn, Scion of Urza's form of draw, however: first, of course, is politics