Summer Mystery Box drop list:
Hisuian Sliggoo / Shiny Hisuian Sliggoo
TM Case 19
TM Case 20
TM Case 21
Bug Net
Weedle Jar
Caterpie Jar
Grimer Jar
Cutiefly Jar
Shiny Grimer Jar
Venonat Jar
Shiny Caterpie Jar
INQ Box
PAPOI Box
Random Elemental Box
Random Held Item Box