Master Yi Support is ranked Off Meta Tier and has a 44.48% win rate in LoL Ultimate Spellbook Patch 11.24. We've analyzed 1474 Master Yi Support games to compile our statistical Master Yi Spellbook Build Guide. For items, our build recommends: Berserker's Greaves, Kraken Slayer, The Collector, Blade of The Ruined King, Bloodthirster, and Pauldrons of Whiterock. For runes, the strongest choice is Precision (Primary) with Lethal Tempo (Keystone), and Domination (Secondary). The optimal Summoner Spells for this build are Placeholder and Flash. Starting items should include Long Sword, Refillable Potion, and Stealth Ward. Master Yi's Best Spellbook Support matchups include Gragas, Ivern, and LeBlanc. Master Yi's Best Spellbook Support counters are Teemo, Alistar, and Bard.