It was first introduced in 2010's Scars of Mirrodin MTG set, and its card list expanded further in releases like War of the Spark, Modern Horizons, and Phyrexia: All Will Be One
Exxaxl: Imaryll, Elfhame Elite fills a weird slot in elfball that we havent seen too often yet and opens up the possibility of voltron on top of a go wide strategy
His ability isn't exactly unheard of as far as attacking creatures go but as far as I know the blocking portion he brings to the table is pretty unique
A similar idea is to just attack with multiple creatures
If you recall from my recent Modern Horizons 3, Top Ten (it's here -Top Ten Cards from Modern Horizons 3 | Article by Abe Sargent (coolstuffinc.com)) at my #2 spot was the Flare cycle, and I named Flare of Cultivation new Cultivate that can be free the clear best of the cycle
Youll also be doing a lot of attacking, so buffing your creatures can be really helpful in a werewolf deck