Imbued tools is a toolset above netherite.

You can upgrade them using a netherite tool, netherite Upgrade template and an enchanted golden apple

Every tool from the set will be upgradded if used frequently enough and will quickly get worse and worse untill used again.

sword uppradges when killing/ hitting enough enimies

all other tools upgrade when mining whats its meant for like pickaxes to stone and axes to wood and for tools like shovels and hoes tilling the ground also counts.

They also rarely play voicelines depending on there current attitude and if they are being used.