any other low level monsters i could pair this card with? any monster effect (when summoned or sent to the GY) that destroys or banish a card on the field?
The only card that I can think of for now is Black stone of Legends.
It's easy to add him to the hand from the graveyard. It kind of allows you to spam Sage, protector, Priestess and master.
If you also use RE baby dragon you can add a level 1 dragon from GY or deck for a consistent WSoTA. Instead of having 3 you have 9+ since you can reuse those from the GY
I believe RE and BE have a good synergy
Black stone of Legends + RE Baby D + Gearfried = 1 card combo.
Use Black stone for Baby, Baby summons Gearfried, he then destroys 1 S/T + Baby searches White or Black stone. Summon White Stone, use Sage on Gearfried or WS or Synchro.
Add BS from GY to hand to repeat each and every turn for infinity WSotA.
When I try the combo you suggested I have a lot of hand power since I use 2 cards but end up getting back 2 cards in my hand.
The problem is that I my deck is then too slow to make use of them all. I'm never handless with more than 3 cards constantly, but can't do much with my hand.