I think since your deck needs a lot of mana to be working correctly you probably want some of the 'bigger' mana rocks, in your colours you don't have Green ramp, but you can try Relic of Sauron and/or Gilded Lotus, Lotus is a bit clunky at 5 mana but it entering untapped and tapping for 3 is surprisingly useful in practice, and Relic is never dead since it can also be used to draw stuff
Despite this, the deck has never been top-tier, but one card has helped it maintain some playability as a rogue deck in some specific formats
When any "Spirit Message" card or "Destiny Board" you control leaves the field, send all "Spirit Message" cards and "Destiny Board" you control to the GY
If a permanent spell with ravenous is copied, the copy will have the same value for X, and the token permanent that the spell becomes as it enters will enter with X counters
We are likely still a good while off from seeing a Kadabra card, but still it's nice to see the Pokmon released from the proverbial magician's handcuffs.