They decide to make Ghost super-effective against Psychic but only provide 2 ghost attacks...lick (which is extraordinarily weak) and night shade (which doesn't have weakness bonus), and then to make things worse for it, give it the most useless type in the game: Poison, and even worse than that give it no poison attacks!
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Everyone wants to call it all around our life with a better name
Everyone falls and spins and gets up again with a friend who does the same - Blink-182