Youre placing your threat right on the field for everyone to see, and you could use it to make some political moves in an EDH game
Cards like Edric, Spymaster of Trest, Toski, Bearer of Secrets, and Marisi, Breaker of the Coil can greatly benefit from creatures with shadow since theyre really hard to block
3 Ragavan, Nimble Pilferer Ragavan, Nimble Pilferer is one of the best one-drops out there, only costing a Red mana to cast
Engineered Explosives has performed always consistently and is a viable tool for most of the decks in Modern
If you havent read that article, do yourself a favor and check it out here: (LINK)
Looking to Standard, this list covers several cards worth crafting or putting into a deck if obtained in a pack