Lands Filter to lands and your color identity to find your fixing options
Alchemist's Gambit All in Good Time Alrund's Epiphany Avatar Kuruk Capture of Jingzhou Chance for Glory Emrakul, the Aeons Torn Expropriate Final Fortune Frenetic Efreet Avatar Gonti's Aether Heart Ichormoon Gauntlet Kang the Conqueror Last Chance Lighthouse Chronologist Lost Isle Calling Magistrate's Scepter Magosi, the Waterveil Medomai the Ageless Mu Yanling Nexus of Fate Notorious Throng Otaria Part the Waterveil Perch Protection Phone a Friend Plea for Power Ral Zarek Regenerations Restored Rise of the Eldrazi Sage of Hours Savor the Moment Search the City Second Chance Seedtime Stitch in Time Teferi, Master of Time Teferi, Timebender Temporal Extortion Temporal Manipulation Temporal Mastery Temporal Trespass Time Bends to My Will Time Sidewalk (playtest) Time Sieve Time Vault Time Walk Timestream Navigator Twice Upon a Time Ugin's Nexus Ultimecia, Omnipotent Wanderwine Prophets Warrior's Oath Wormfang Manta

Youll immediately recover the card you spent, and after that, each Sunfall or Leyline Binding you cast will draw you new cards
Active openers also earn points toward free drops
However, even with just one opponent, that player will draw four cards, so that ends up being a total net loss of one card for you, which means Prosperity with X=4 was not card advantage