Tracking renown can be a little fiddly, but itll be worth it when you start to double all of your counters
Booster Bundle This was my favorite product to open
Its Ability lets it instantly switch into the Active Spot while transferring all attached Energy to itself, allowing it to attack immediately
Other strategic cards include Turtonator, which forces opponents to discard energy when attacked, and Dewgong, which allows flexible energy movement
Notably, the returned Rats don't need to be among the cards you milled, so if a powerful Rat gets removed, Ashcoat can easily get it back so long as you don't mind milling four cards (and that effect can play into graveyard synergies too)
Set: Pokemon Prismatic Evolutions (PRE)