Then I encountered a few losses, I identified a few issues, addressed them, took the deck into a league and trophied

Acererak the Archlich Adorned Crocodile Angrath, Captain of Chaos Anointer Priest Aphemia, the Cacophony Archdemon of Unx Ashnod, Flesh Mechanist Assemble the Rank and Vile Aven Eternal Bladewing, Deathless Tyrant Bleeding Edge Bone Miser Boneclad Necromancer Bridge from Below Callous Dismissal Cellar Door Cemetery Reaper Commence the Endgame Corpse Cobble Corpseweft Cradle of the Accursed Crowded Crypt Crush Dissent Cryptbreaker Curse of Disturbance Curse of Shallow Graves Curse of the Restless Dead Death Tyrant Deathknell Berserker Deluge of the Dead Diregraf Colossus Doomed Dissenter Drana's Chosen Draugr's Helm Dread Summons Dreadhorde Invasion Dreadhorde Twins Drunau Corpse Trawler Dunes of the Dead Dying to Serve Embalmed Ascendant Enter the God-Eternals Essence Anchor Eternal Skylord Falcon Abomination Feast or Famine Field of the Dead Flip the Switch Forlorn Pseudamma Geralf, Visionary Stitcher Geralf, the Fleshwright Ghoulcaller's Accomplice Ghoulish Procession Gleaming Overseer God-Eternal Oketra Graf Harvest Gravedig Graveyard Marshal Grim Initiate Grim Reaper's Scythe Grixis Slavedriver Havengul Runebinder Headless Rider Herald of the Dreadhorde Hildibrand Manderville Hildibrand Manderville Hobbling Zombie Honor the God-Pharaoh Hour of Victory Invade the City Invading Manticore Jadar, Ghoulcaller of Nephalia

Unfortunately, a reliable Flicker effect has not yet been spoiled for The Brothers War
#20 Mark of Sakiko Last on the list is Mark of Sakiko
Green has plenty of easy lifegain triggers by simply playing it, allowing you to initiate the combo incredibly easily