Once youre creating that many Treasures, you shouldnt have problems closing the game with Mayhem Devil or Disciple of the Vault, or casting big X spells
As for the cards that I previously mentioned, I already have a copy of Fertilid in another deck, so, between Shapers of Nature and Zameck Guildmage, the guildmage has both a lower casting cost and a lower cost for using its ability, so I believe that that is the card that I shall I put into my Atraxa deck, to replace Abzan Falconer
Does Hexproof Protect from Board Wipes
This leads to decks like Omniscience and Epic Experiment being playable
it kills target creature at Instant-speed
In this MTG version, you have to contend with the five mana cost for playing this card, so it'll be hard to find room to cast it unless things are going very well for you, in which case your opponent can concede in response