Pokémon Go just dropped a perfect Mewtwo and a Master Ball for free

Attention, trainers! You might want to check your Pokémon Go app immediately. According to IGN, developer Niantic is currently giving away a one-time-only, shockingly generous haul.

Simply logging in right now will net you a perfect, 100% IV Mewtwo with a unique background. Oh, and they're also tossing in the incredibly rare Master Ball for good measure.

This isn't a trick or a timed research quest. It's a straight-up freebie, and in the often-grindy world of Pokémon Go, that's a major event. Don't let this legendary package slip away.