Bet y'all didn't know Reflect Type exists. Only four Pokémon learn it naturally (with a grand total of eight if you include those it can be bred onto). Among them are:
>Tentacruel, who can only learn it via Move Reminder
>Staryu, but only at level 35-46 depending on the game, when you've probably already evolved it
>Mew, again via the Reminder
>Latias, but only at level 70. However, ORAS lowered it to 36, so if you were enough of a noob to use it in AS, you might have seen it
You're more likely to stumble onto it by using Metronome. And for such a rare move, it's not all that good, since it just changes your type to the opponent's.
