It doesnt have Skullclamps ability to kill its host without help, and it only draws one card instead of two, but Skullclamp is a broken card and shouldnt be considered a baseline for measuring the value of anything
All in all, Kess is perhaps the best Grixis commander in Magic
Survival of the Fittest Where Greater Good offers you the ability to churn through your deck and fill your graveyard in large, variable amounts, Survival of the Fittest offers precision
Family Reunion Flare of Fortitude Glaring Spotlight Heroic Intervention Jirina, Dauntless General Join Shields Kaya, Intangible Slayer King Darien XLVIII Kiora Bests the Sea God Lazotep Plating Lich's Mastery Lightshield Array Linvala, Shield of Sea Gate Metropolis Reformer Mutational Advantage Niv-Mizzet, Guildpact Odric, Lunarch Marshal Restoration Magic Selfless Safewright Sheltering Word Silkguard Simic Charm Smuggler's Surprise Spectacular Spider-Man Sporeweb Weaver Surge of Salvation Syr Ginger, the Meal Ender Tamiyo's Safekeeping Tyrant Guard Veil of Summer Yuan-Ti Scaleshield
5 Promise of Aclazotz / Foul Rebirth A promise of demons
Since deathtouch evens out there rank but the fact that you have two outmatches your opponent