Surveilling can help to fill your graveyard for the various decks that care about it, losing life plays well with the bat theme, and all decks enjoy drawing more cards
This will accelerate your mana, fix it with whatever color you need, and thin your deck so that you have a better chance of drawing more important cards later in the game
For one thing, the event produced some pretty great card designs
Dont miss a land drop, turn three play another creature with at least 3 toughness like an average 3/3, play this dog druid on 4, and on turn 5 you have access to 7 mana
Beware if your opponent attacks with several weak cards at once especially if they have mana to spare
One of Mavericks strengths is its access to a broad range of graveyard interaction through creatures, artifacts, and utility lands, while also having access to non-permanent interaction (Surgical Extraction)