Over the years, there have been many important items introduced that interact directly with significant Pokemon. In all subsequent games there is usually a method to reobtain them since Key Items cannot be traded, and Ultra Sun & Ultra Moon is no different. The following lists will detail how to get all the significant Key Items that interact with various Pokemon.
|Griseous Orb||Hau'oli City - Shopping Mall, Antique Store||Changes Giratina to its Origin form|
|Red Orb||Hau'oli City - Shopping Mall, Antique Store||Causes Primal Reversion in Groudon|
|Blue Orb||Hau'oli City - Shopping Mall, Antique Store||Causes Primal Reversion in Groudon|
|Key Stone||Gift from Sina and Dexio at Poni Plains after becoming Champion||Allows Mega Evolution with the appropriate Mega Stones|
|Gracidea||Hau'oli City - Shopping Mall; gift from store clerk in the apparel shop||Changes Shaymin to Sky form|
|Reveal Glass||Dimensional Research Lab - Gift from Burnet after clearing Olivia's Grand Trial||Changes Thundurus, Tornadus, or Landorus between Incarnate and Therian forms|
|Douse, Shock, Burn and Chill Drive||Route 8 - Gift from Colress, near where you first met him, after becoming Champion||Changes the Type of Genesect's Techno Blast move|
|DNA Splicers||Aether Foundation Secret Lab A - Gift from Aether Employee after becoming Champion||Allows Kyurem to fuse with either Reshiram or Zekrom|
|Prison Bottle||Aether Foundation Secret Lab A - Gift from Aether Employee after becoming Champion||Changes Hoopa to Hoopa Unbound form|
|Diancite||Konikoni City - Gift from the collector in Olivia's shop if you show him Diancie||Allows Diancie to Mega Evolve|
|Venusaurite||Battle Tree - Gift after defeating Red or Blue in a Battle Tree match||Allows Venusaur to Mega Evolve|
|Blastoisite||Battle Tree - Gift after defeating Red or Blue in a Battle Tree match||Allows Blastoise to Mega Evolve|
|Charizardite X||Battle Tree - Gift after defeating Red or Blue in a Battle Tree match||Allows Charizard to Mega Evolve|
|Charizardite Y||Battle Tree - Gift after defeating Red or Blue in a Battle Tree match||Allows Charizard to Mega Evolve|
Where the Mega Stones At?
Aside from the above five Mega Stones listed, the rest can all be obtained from the Battle Tree shop. No more waiting for Game Freak codes for months on end! And with the addition of Mantine Surf you do not even have to battle to get more BP.