Like most Pokmon cards, the value of Kangaskhan depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Hidden Fates)

Enhanced Awareness Escape Detection Even the Score Everdream Evermind Exclude Failed Inspection Fire // Ice Fleeting Distraction Flow of Knowledge Focus the Mind Force Away Force Void Foreshadow Frantic Inventory Frantic Search Frostveil Ambush Galestrike Geistwave Glacial Grasp Glimmer of Genius Glimmerburst Glimpse of Freedom Graven Lore Grip of Amnesia Grip of the Roil Gush Halt Order Hampering Snare Harmonized Crescendo Hieroglyphic Illumination Hithlain Knots Hydrolash I Am Iron Man Illusion of Choice Illusionist's Stratagem Imaginary Threats Infuse Intellectual Offering Interdict Into the Roil Into the Story Jace's Ingenuity Jace's Scrutiny Jinx Joint Exploration Jolt Keep Safe Keep Watch Laquatus's Disdain Lat-Nam's Legacy Leadership Vacuum Leap Learn from the Past Leave in the Dust Long River's Pull Lost Days Lunar Rejection Mage's Guile Majestic Metamorphosis Meditate Meeting of Minds Mental Journey Mental Modulation Mental Note Mind Transfer Protocol Miscalculation Mise Mysteries of the Deep Mystic Confluence Neutralize Nexus Mentality

Incapsula incident ID: 1537000680197654950-715265638620270866
A card coming into play should be impactful at any stage of the game
The One Ring Were talking about the normal version and not the unique, serialized 001/001
They might also run spot removal in the form of [c]Swords to Plowshares[/c], mass removal in the form of [c]Wrath of God[/c], or both