I have similar combos to that last two, but they do a tiny bit more damage.
j.C, cr.B, st.B > st.D HDC st.C xx hcf+D(2) j.qcb+C > hcf+D(2) xx qcb.C > hcf+A(1) xx qcb.C > hcf+D(2) xx qcb.C > hcf+D(2) xx qcf~hcb+AC. 804 damage/20 stun. Uses two bars, builds ~1/5 a bar.
j.C, cr.B, st.B > st.D HDC st.C xx hcf+D(2) j.qcb+C > hcf+D(2) xx qcb.C > hcf+A(1) xx qcb.C > hcf+D(2) xx qcb.C > hcf+D(2) xx qcb.C > qbc.B > air throw. 646 damage, 44 stun. Meterless, builds half a bar.
Some notes:
If you let Mai slide forward between st.D HD st.C, you can start this from where they stand at round start and carry them to the corner. However, if you slide too long, even if the st.C hits, you won't have enough time for the ender.
You have to wait a tiny bit between qcb+C and hcf+A, or when you cancel into qcf+C you only hit with the flame. Too late, however, and they fall out of the combo.
The meterless combo stretches HD really thin, and the 2nd to last qcb+C uses it all up; if you're too slow, you'll run out of time before you can cancel the last hcf+D into it.
j.C, cr.B, st.B > st.D HDC st.C xx hcf+D(2) j.qcb+C > hcf+D(2) xx qcb.C > hcf+A(1) xx qcb.C > hcf+D(2) xx qcb.C > hcf+D(2) xx qcf~hcb+AC. 804 damage/20 stun. Uses two bars, builds ~1/5 a bar.
j.C, cr.B, st.B > st.D HDC st.C xx hcf+D(2) j.qcb+C > hcf+D(2) xx qcb.C > hcf+A(1) xx qcb.C > hcf+D(2) xx qcb.C > hcf+D(2) xx qcb.C > qbc.B > air throw. 646 damage, 44 stun. Meterless, builds half a bar.
Some notes:
If you let Mai slide forward between st.D HD st.C, you can start this from where they stand at round start and carry them to the corner. However, if you slide too long, even if the st.C hits, you won't have enough time for the ender.
You have to wait a tiny bit between qcb+C and hcf+A, or when you cancel into qcf+C you only hit with the flame. Too late, however, and they fall out of the combo.
The meterless combo stretches HD really thin, and the 2nd to last qcb+C uses it all up; if you're too slow, you'll run out of time before you can cancel the last hcf+D into it.