sallye
Create a Minecraft Fabric 1.21.1 mod. When a player joins a world (singleplayer or multiplayer), the mod should automatically give the player the Levitation...
sallye is a client-only Fabric 1.21.1 mod that gives your player Levitation for 10 seconds (200 ticks) at level 1 every time you join a world. The effect is applied once per join—no repeats while you stay in that session.
How it works: the client listens for the play connection join event, then on the next client tick after your player exists it adds the Levitation status effect.
Notes: other players must also run the mod to receive the effect themselves, and servers that override client-side effects may shorten or remove the Levitation. Future improvements could add options to configure duration/amplifier or a toggle to disable the effect on specific servers.