Most of these also boost a type. Hold them in battle unless the row says otherwise.
Arceus plates
Each plate boosts that type by 20% and changes Arceus to that type:
Draco Dragon, Dread Dark, Sky Flying, Meadow Grass, Mind Psychic, Iron Steel, Pixie Fairy, Zap Electric, Insect Bug, Earth Ground, Fist Fighting, Splash Water, Flame Fire, Spooky Ghost, Stone Rock, Toxic Poison, Icicle Ice.
Silvally memories
Bug, Fighting, Fire, Flying, Ghost, Grass, Ground, Ice, Dragon, Dark, Fairy, Electric, Poison, Psychic, Rock, Steel, Water. Changes Silvally's type.
Genesect drives
Burn (Fire), Chill (Ice), Douse (Water), Shock (Electric). Changes Techno Blast.
Ogerpon masks
| Mask | Form types |
|---|---|
| Hearthflame | Grass / Fire |
| Wellspring | Grass / Water |
| Cornerstone | Grass / Rock |
Origin and crowned forms
| Item | Pokémon |
|---|---|
| Griseous Core | Giratina Origin Forme |
| Lustrous Globe | Palkia Origin Forme |
| Adamant Crystal | Dialga Origin Forme |
| Rusted Shield | Zamazenta Crowned Shield |
| Rusted Sword | Zacian Crowned Sword |
| Blue Orb | Primal Kyogre (in battle) |
| Red Orb | Primal Groudon (in battle) |
Adamant Crystal, Griseous Orb, and similar orbs are also listed under held items.
Kubfu and Shaymin
| Item | Effect |
|---|---|
| Scroll of Darkness | Kubfu → Single Strike Urshifu |
| Scroll of Waters | Kubfu → Rapid Strike Urshifu |
| Gracidea | Shaymin Land → Sky Forme (daytime) |