1. Multi EXP: Increases the experience gained by all party members after a battle by 50% when held by the first Pokemon in your party.
2. VS Seeker: Allows you to re-battle a previously defeated trainer. Useful for exp and money farming and completing the Pokedex.
3. EXP Share: Similar to Multi EXP, this item shares the experience points earned in battle among all Pokemon in your party, regardless of their position.
4. Rare Candy: Instantly levels up a Pokemon. A valuable item to quickly boost your Pokemon's levels.
5. Lucky Egg: Increases the experience gained by a Pokemon when held in battle. Can be particularly useful when combined with EXP-boosting items.
6. Flame/Ice/Thunderstone: These evolution stones can be used to evolve certain Pokemon, such as Eevee into Flareon, Vaporeon, Jolteon, etc.
7. Heart Scale: A valuable item used for a specific purpose in Poketech coupons Pokemon Brilliant Diamond and Shining Pearl to move tutors (NPCs) to certain locations, allowing them to teach specific moves to compatible Pokemon.
8. Mystery Gift (limited-time coupons): May allow you to receive various exclusive or event items, such as special-edition Pokemon, items, or costumes, through the Mystery Gift feature. These coupons were often provided by Nintendo or special events and had time-limited availability.
9. Power Berries: Various berries that hold different effects that can be used during contests to enhance the performance of certain Poketech coupons Pokemon.
Note: The availability of these rewards may slightly vary depending on the exact version of Pokemon Diamond you have, as well as the availability and timing of specific events.