I would look to Tormods Crypt in decks that want to play their cards early and also want them to be free, like Mono-Red Phoenix
Chain of Vapor fits into the group-hug theme and could bounce back a threat and delay it for a turn
How can you afford NOT to seize this incredible opportunity?", and that what the money would be used for would be announced "soon"
The best tip you can follow is to playtest, fail, and then modify the deck again, removing any card that didn't help you in the match or replacing it with a different option you want to try.
PSA grading is a method of determining a sports card's authenticity and increasing its market value
The +1 on Nissa, Sage Animist is literally the text on Coiling Oracle, so I dont need much more here