Each of these new cards adds something special to your deck
Rush of Knowledge (Onslaught/Legions/Scourge) The common consensus in Onslaught/Legions/Scourge draft was that you wouldn't want to play a deck with more than two colors, since there weren't many cards which allowed you to "mana fix" - that is, fetch a third color of mana
Additionally, all Artifact creatures and Heroes get +1/+1 for each Artificer the player controls or is in the graveyard
New mechanics Toy is a new Lorcana character classification which will allow players to build typal decks around that subtype
Besides that, Kaito loves to draw cards regardless of what form he comes in, and don't forget Dimir spells like Lim-Dul's Vault , Consult the Necrosages , or Siphon Insight
The first thing Delney does is make it so that your creatures with two power or less cant be blocked by creatures that have three power or more