Murkrow in depth
Yami, karasu and a witch's nose
The Japanese name, ヤミカラス, combines 闇 (yami, darkness) with カラス (karasu, crow). No frills: dark crow. English does the same thing with different material, murky — dim, gloomy — stuck to crow, and the result sounds enough like a real word to pass.
The design goes a step beyond a crow. The yellow beak curving downwards is a hooked nose, and the three tufts on its head form the point of a hat: the silhouette of a storybook witch mounted on a bird that European folklore already associated with ill omens. The Pokédex entries do not describe powers; they describe superstitions, which is an unusual way to fill out a Pokédex entry. Even the real bird's collective noun helps: in English, a group of crows is a murder.
The stone that took seven years
Gold and Silver had no Abilities. They arrived with Generation III, and here there was only one, Insomnia, which prevents sleep — fitting for an animal that wakes at sunset and flies all night.
Generation IV was what changed everything. It added Super Luck as a second Ability, raising the critical-hit ratio. It finally gave Murkrow an evolution, Honchkrow, in exchange for a Dusk Stone. And it split physical and special attacks by move rather than by type: until then, Dark was entirely special and Flying entirely physical, so its two 85s automatically divided the work according to whichever type it used. Since 2006, each move decides, which is why a symmetrical spread like its own aged well.
Prankster did not appear until Generation V, and Generation VI cut it back: priority status moves stopped affecting Dark types. The same pair of scissors that took away some of its targets also shielded it.
At night, and in the right version
Its availability has always been narrow. In Gold, Silver and Crystal, it appeared only on Routes 7 and 16 in Kanto, and only at night, which in practice left it out of many people's playthroughs. In Diamond, it appeared in Eterna Forest and Lost Tower, again at night; in Pearl, it appeared nowhere and had to be traded. HeartGold and SoulSilver brought back Routes 7 and 16 and added the Safari Zone, where it could appear in tall grass in the morning and during the day.
That pattern — nocturnal, scarce, late access — is the same one Misdreavus carries, the Generation II Ghost that also ended up banned from the seventh-generation and ninth-generation Little Cups. They share the same arc: a minor Generation II creature, forgotten, rescued in Generation IV with a stone evolution and turned into a small-format problem.
For a normal playthrough, what it brings is early Speed and a type that ignores Psychic moves. Its 42 Defense on both sides leaves no room for debate: switch it out at the first misread.