There are two main homes for Goblin Assassin
The main consideration is playgroup expectation
My justification for running Telepathy is Im too dumb to bother reading my opponents hands and finding their wincon I just want to know what they have coming down so I can play countermagic in time

Scientists Abandon Hope Abian, Luvion Usurper (playtest) Abolish Absorb Vis Academic Dispute Academy at Tolaria West Acceptable Losses Akroma's Blessing Akroma's Vengeance Alabaster Host Intercessor Alberix, the Trade Planet (playtest) Alexi, Zephyr Mage Amber Gristle O'Maul Amugaba Ancestral Memories Ancient Excavation Angel of the Ruins Anje's Ravager Anurid Brushhopper Anvil of Bogardan Apocalypse Aquamoeba Arc Mage Arcane Subtraction Arm-Mounted Anchor Arrogant Wurm Artificer's Intuition Artillery Enthusiast Ash Barrens Astonishing Spider-Man Asylum Visitor Atemsis, All-Seeing Attunement Aura Extraction Avaricious Dragon Aven Trooper Avenger en-Dal Awaken the Honored Dead Backslide Bag of Holding Balamb T-Rexaur Balance Balduvian Horde Balloon Peddler Balshan Griffin Bandit's Talent Barbarian Bully Barkhide Mauler Barren Moor Basking Rootwalla Battle Plan Battlewing Mystic Bazaar of Baghdad Bebop, Warthog Warrior Bedhead Beastie Bedlam Reveler Behold the Beyond Binding Negotiation Blasted Landscape Blaster Mage Bloated Toad Blood Fountain Blood for the Blood God

The promo cards feature the creatures Pikachu, Eevee, Mimikyu, Psyduck, and Rowlet in the position of the screamer in Munch's classic creation