Mafia 56. Avatar: Invasion.

If not, how is it better than a regular block?

If Ty Lee wants to block Katara or Aang (during training), she needs to block magic (ND order). In all other cases, immobilizing them is enough.

Maybe just make it 100 after all? Eh?

I suggest this: either 100 as is, or 50%, but change it to Dimension Door, as Pobeditel requested.