While is surely a steep mana cost, you get three impactful keywords (trample, vigilance, and haste) on a 7/6 body and a massively powerful triggered ability
You may then have that player shuffle that library
Today, we're heading to Standard to play some Slime Against Humanitymany, many copies of Slime Against Humanity
Smagol, Helpful Guide Smagol, Helpful Guide kinda has a similar issue as Braids, Arisen Nightmare: Its main aristocrats-related ability only works at the end of the turn

Calculated Dismissal Cascade Seer Catch of the Day (playtest) Cavalier of Gales Chain to Memory Chorus of the Tides Cloudreader Sphinx Condescend Contact Other Plane Council's Deliberation Cryptic Annelid Curator of Mysteries Deliberate Delightful Discovery Denethor, Stone Seer Desynchronize Dissolve Diviner's Portent Djinn of the Fountain Djinni Windseer Eligeth, Crossroads Augur Elrond, Lord of Rivendell Elvish Mariner Eye of Malcator Eyes Everywhere Eyes of the Watcher Fading Hope Faerie Seer Fated Infatuation Foresee Freeze in Place Gadwick's First Duel Geist of the Archives Glimmer of Genius Glistener Seer Goggles of Night Graven Lore Grey Havens Navigator Hakka, Whispering Raven Hedron Alignment Hermes, Overseer of Elpis Hithlain Knots Horizon Scholar Horses of the Bruinen Impede Momentum Inga Rune-Eyes Ingenious Mastery Inscription of Insight Interpret the Signs Jace's Defeat Jace's Sanctum Jace, Mirror Mage Jace, Unraveler of Secrets Joint Exploration

$125.00 Explore the cavernous depths beneath Ixalan in a race to the hidden core