Flare would also help as a cheap 2-drop, and is great against secret mate as it gets rid of all enemy secrets as well, but is otherwise 2 mana for a card. Nat Pagle gives you a 50% chance of drawing an extra card at the start of your turn, but could cause issues due to the fact that he is a legendary and would increase the dust cost.
In my opinion, Starving Buzzard would be better because this deck has an issue with late game (I know this firsthand). This deck is mainly beasts, so Starving Buzzard’s effect can mostly treated as whenever you play a minion.

Candleshot seems to be the best card to remove in this deck. I was thinking maybe a Novice Enginner, because of the nice low mana cost, or a Starving Buzzard because of the continual card drawing. I think the main problem with Starving Buzzard that it has a higher mana cost, but the card draw issue is mostly late game, so this should be fine. Hearthstone GAMepedia has a helpful list of cards that have card draw effects, which you can use for additional research.