In your drawstep you draw another card, so that's very strong with the card flow
You can find the other 3 parts here in case you missed them: Scrappy Survivors, Hail, Caesar and Mutant Menace
Most players aim to double-spell on their turns at least, so you often get an extra card or two a turn cycle
While I still rate Purphoros a bit higher (thanks to being indestructible and enchantment-based), Tannuk offers some major upsides worth exploring
As noted on the Magic: The Gathering website, players who attend "side events" at MagicCon: Las Vegas this June 20-22 and Magic Spotlight: FINAL FANTASY in Chiba, Japan on June 27-29 "will receive a traditional foil Swords to Plowshares promo card as well as a FINAL FANTASY Trading Card Game Alphinaud promo card." Together, the two cards look pretty neat
This price will fall quite far, and you should absolutely sell any copies you open/trade for at the prerelease before it drops to $20