I don't think a deck has ever been truly identified by its energy
Used in early sets ( Jungle, Base Set, Fossil ) and some modern promotional cards
Definitely on theme
They love to kill creaturesAnowon, the Ruin Sage, Gatekeeper of Malakir, Ascendant Evincar, Butcher of Malakir, Vein Drinker, Vampiric Dragon, Drana, Kalastria Bloodchief, Guul Draz Assassin, Repentant Vampire, and Kalitas, Bloodchief of Ghet
The last time I wrote about Jund, I wrote this: I dont claim G/B/W Reanimator is a great matchup, but I dont consider it something to be scared of either. At the time, my experience playing Jund against Reanimator had been good, but I wasnt willing to pit my own opinion against the certainty of the rest of the MTG community, which had decreed that Reanimator crushed Jund