:214::P: guarantees a critical burst before you use it so that is good to use in combos. 4H+K is also a really good stun. Here are some examples:
:6::P:, :4::h+k:, :214::P:, :p+k:
:214::P:, :4::h+k:, :6::K:, :p+k:
:4::h+k:, :3::P:, :214::P:, :p+k:
:214::P:, :4::4::P:, :214::P:, :p+k...