To promote the Pokémon the Movie: I Choose You!, between July 11th, 2017 and July 31st, 2017, participating 7-Eleven store locations across Japan will be distributing Mew via the DS via 7-Spot app. A serial code can be obtained and players of Pokémon Sun or Moon can redeem the code from July 11th, 2017 until August 7th, 2017.

Mew Details

Pokémon	Info
	Level: 50
	OT: ２０ＴＨ★

Satoshi's Lizardon, Soji's Lucario and Makoto's Pochama Details

From August 1st, 2017 until August 20th, 2017, Satoshi's Lizardon, Soji's Lucario and Makoto's Pochama will be available. A serial code for each can be obtained and players of Pokémon Sun or Moon can redeem the code from August 1st, 2017 until August 28th, 2017.

Pokémon	Info
	Level: 40
	OT: サトシ (Satoshi)

Pokémon	Info
	Level: 40
	OT: ソウジ (Soji)

Pokémon	Info
	Level: 30
	OT: マコト (Makoto)

Stamp Rally 2017 Details

Participants in the Pokémon Rally 2017 need to collect two stamps per Event Pokémon but only one stamp per store per day can be obtained from 7 am to 7 pm.

Source: http://7spot-info.jp/pokemon_rally_2017/