This is a plugin which creates 4 sword you can craft.
These are the recipes


wither sword:
4 neth scrap
4 wither skull
1 neth star

Warden:
kill warden for a warden shard

4 warden shards
4 echo shards
1 neth ingot

void sword:
1 dragon egg

guardian sword:
Kill a guardian boss for a guardian shard
4 guardianshards
4 sponge
1 prismarine shard