Your foe taps three permanents, which are likely three lands and leave any creatures they cast out
Faeries Once a Standard menace, Faerie support shows up in Wilds of Eldraine in much more tame fashion than we saw in Lorwyn so many years ago
Basic lands come in six types, with each of the six producing a different type of mana when tapped: Plains produce white mana, Islands produce blue, Swamps produce black, Mountains produce red, Forests produce green, and Wastes produce colourless (and are much, much less common than the other five, having only appeared in one set)
Pete - Game Referee - This ability is very niche
So really, what is Cyclopean Snare doing being printed as is