It's not the easiest thing in the world to turn this buff on, but this is a nicely-statted creature that can hate on graveyards in a format where that matters
in cEDH, Blood Pet is often found in Krrik, Son of Yawgmoth builds as a way to net an extra mana for 2 life, but also sees a lot of play in Inalla, Archmage Ritualist and Ad Nauseam lines to rush out these expensive spells or aid in comboing off with other cards to win the game
Terra Branford (Urza, Lord High Artificer) Artifacts are Magics strongest card type, so it should be no surprise that an artifact commander would be one of blues best
1: Create a 3/3 green Elk creature token
Finally, if youre building one for Commander or Brawl, then youll need one commander card plus either 99 cards for Commander and 59 for Brawl
Plenty of strategies can exploit replay land effects