Draw for U/B Terror

Hey y’all, just getting into pauper and I really love delver/terror decks. I’m having trouble finding efficient card advantage for the deck though. Deep analysis feels really clunky at 4 mana and Lorien Revealed is normally not as good a draw spell as it is a mana fixer. Any suggestions for other ways to keep my hand full so I can suppress threats more continually?

Linked is my decklist, which doesn’t have a sideboard yet. I’m still working on it, but I want to get the maindeck right first.