pokémon 151 jumbo booster box - chinese Pokemon Simplified Collect Hope (Vol 2) 151C which has yet to be released in any other language. Pokémon Chinese Collect 151 Journey

It allows players to get three mana of any color when they sac it and is crucial to a first turn Channel-Fireball kill in a Red/Green deck

Blessing of Osiris After a couple months of constructed play, we have seen a significant number of players across multiple regions taking advantage of a three-card infinite combo in Prophecy

You can read the full announcement by Mark Rosewater HERE I've put up the entire Masterpiece Series: Kaladesh Inventions HERE Were you a fan of Zendikar Expeditions

You can also set aside a copy of the Necron Dynasties deck for $41.44 at Amazon , but that isn't strictly listed as a 'deal'

Edgar, King of Figaro is a free win and a must include

In the hobbit/halfling decks, where everything has about one or two power, this is likely cheap enough to do a lot of work