In case your commander isnt on the battlefield yet, you have Fate Unraveler and Underworld Dreams to keep pressuring whenever your opponents draw cards
A deck that focuses on graveyard recursion and reanimation would greatly benefit from Rise of the Dark Realms, as it allows for a powerful board presence and can swing the game in your favor
Pauper has also seen its share of metalcraft decks
Activate Walking Ballista, remove a +1/+1 counter from it, and target it again
This means you could run two copies of a card in decks sized from 1 to 20, while decks at 60 cards or more could run unlimited copies of any given card
If there's a cost associated with blocking Anzrag, the defending player isn't forced to pay that cost, so it doesn't have to be blocked in that case either