What does the wonder card do in Pokemon soulsilver?

In Pokémon SoulSilver, the Wonder Card is a key item that allows players to access special events, such as Wi-Fi events, and receive Mystery Gifts via the Nintendo DS's Wi-Fi Connection or local wireless connection. It can be obtained by speaking to certain NPCs in-game or by receiving it as a gift from another player.

When a Wonder Card is used, it will open up a special menu where players can select the event or Mystery Gift they wish to access. Events may include special Pokémon distributions or challenges, while Mystery Gifts can include items, Pokémon, or other rewards.

In order to use a Wonder Card, players need to ensure that their Nintendo DS is connected to the internet or has a local wireless connection established. Once connected, they can select the Wonder Card from their inventory and activate it to access the associated event or Mystery Gift.

It's worth noting that Wonder Cards were only available during a specific period of time and for certain events or distributions. Some Wonder Cards may have expired or may no longer be available, so it's always a good idea to check the event details and availability before attempting to use a specific Wonder Card.