@Braindead, yup, as Tanno says, we'll just solidify it here and then move it.
@Toodrunk2combo, like Tanno brings up, you'd actually want to Aura in the combo to get a link. Here's the breakdown from the guide (last combo):
Parry, back dash, JIP, 242, run, B12~Burst
- No Aura = 26%
- Aura on = 28%
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Notes: None.
Parry, back dash, JIP(2), B2, run, B12~Burst
- No Aura = 26%
- Aura on = 29%
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Notes: Male only.
Parry, back dash, JIP, B12~Aura, 242, run, B12~Burst
- No Aura = 31%
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Notes: This combo is not possible with Aura on. If Aura is on, do one of the two above instead.
You can also end in Slide for slightly less damage but longer knockdown.
@Tanno, like Boba says, D4 into EN Iceball doesn't combo,
but you bring up an interesting point. At the start of the match, D4 into EN Aura could be useful, followed by say B2 (because the EN Aura moves Sub slightly forward, leaving you at the perfect range to hit with the tip of B2 on an opponent who is stumbling from being clipped by D4), at which point you could do a regular combo or spend the bar you just gained for a longer EN Slide combo. The nice thing is you'll be insanely plus if the D4 hits and if the D4 blocks you should still catch most opponent's off guard. Sure, they could block the B2, but often hitting someone low first gets them to block though, thus opening them up for the overhead. I'll have to try this at the start of the match.
Btw, tested D4~EN Aura on block against Reptile's EN Slide. It's safe, but definitely negative for Sub. I still say you could catch someone off guard with it though.