Monumental Henge helps you dig for legends and ensure you have one to play, and Delighted Halfling and Untaidake, the Cloud Keeper make mana to pay for them
I'm not going to go too in-depth on the deck here since it's pretty straightforward: play Chocobos, make land drops to trigger their landfalls, make the Birds huge, and win the game
It's the most powerful card in Dominaria
It will also stop that Dockside Extortionist from feeling so scary, especially since you can always pay one white mana and sacrifice Dauntless Dismantler to remove all of those pesky Treasure before they untap
In the right deck, this Proliferate effect is fantastic
New Ability Word: Celebration The Phyrexians have been defeated, and that's cause for merriment