how to price pokemon cards Market Higher or Lower Game Prices keep dropping : r/PokemonTCG

Lagrella, the Magpie Lagrella, the Magpie is super confusing and worded very poorly

Creatures (17) 1 Solemn Simulacrum 1 Frostwielder 1 Fog Bank 1 Trinket Mage 1 Subterranean Spirit 1 Shrieking Drake 1 Izzet Chronarch 1 Grinning Ignus 1 Cunning Sparkmage 1 Augury Owl 1 Mindshrieker 1 Etherium-Horn Sorcerer 1 Talrand, Sky Summoner 1 Niv-Mizzet, Dracogenius 1 Diluvian Primordial 1 Young Pyromancer 1 Lightning Berserker Lands (37) 9 Mountain 10 Island 1 Volcanic Island 1 Polluted Delta 1 Bloodstained Mire 1 Temple of the False God 1 Shivan Reef 1 Izzet Boilerworks 1 Steam Vents 1 Academy Ruins 1 Terramorphic Expanse 1 Tolaria West 1 Spinerock Knoll 1 Reliquary Tower 1 Scalding Tarn 1 Evolving Wilds 1 Command Tower 1 Sulfur Falls 1 Izzet Guildgate 1 Swiftwater Cliffs Spells (45) 1 Brainstorm 1 Sol Ring 1 Capsize 1 Darksteel Ingot 1 Starstorm 1 Mind's Desire 1 Crucible of Worlds 1 Lightning Greaves 1 Fabricate 1 Vedalken Orrery 1 Mind Stone 1 Fact or Fiction 1 Izzet Signet 1 Reiterate 1 Coalition Relic 1 Call the Skybreaker 1 Flame Jab 1 Oona's Grace 1 Gorgon Flail 1 Expedition Map 1 Rite of Replication 1 Basilisk Collar 1 Chain Reaction 1 Comet Storm 1 Everflowing Chalice 1 Leyline of Anticipation 1 Preordain 1 Into the Core 1 Desperate Ravings 1 Faithless Looting 1 Mystic Retrieval 1 Stolen Goods 1 Spelltwine 1 Vandalblast 1 Curse of the Swine 1 Gorgon's Head 1 Dig Through Time 1 Unstable Obelisk 1 Commander's Sphere 1 Seal of the Guildpact 1 Mizzix's Mastery 1 Thought Vessel 1 Crush of Tentacles 1 Pyromancer's Assault 1 Fall of the Titans Breaking Down the Synergies Artifact Mana Jori En, Ruin Divers effect is greatly helped by mana rocks

Any creatures with banding, and up to one without, can attack in a band

Standard Gold Pokmon Cards : These come in packs and boosters