Shock on a creature is great, and Dragons are also great, so this card must be exceptional
Moratorium Stone Choosing which card to exile is a good ability to have in Commander games, but I doubt there will be a run on this card
With more ring wraiths you may get worried about decking yourself but if you've knocked out your opponents, who cares
Razia, Boros Archangel Karametra, God of Harvests In Karametra, youre going to get lands
This should get you off to a good start with the Night Witch: you can also watch Baba Lysaga (or Baby Lasagne) played in one of my favourite episodes of Tolarian Community Colleges Shuffle up and Play series, focused on Budget Commander decks, which should give you some additional ideas on how to build her without breaking the bank: Wilhelt, the Rotcleaver Innistrad: Midnight Hunt brought us the Undead Unleashed precon and, right out of the box, this deck plays pretty well
Normal combat damage happens with poison creatures but the player just doesnt gain a new poison counter when the trigger resolves