#6 Damian Priest vs. Finn Balor
Finn Balor was supposed to face off with the Velveteen Dream several weeks ago but was left laid out backstage by an unknown person. Finn Balor would then deliver a promo calling out whoever had done that to him before getting into a confrontation with Cameron Grimes. Grimes managed to defeat Balor on the latest edition of NXT after Damian Priest attacked The Prince with his nightstick.
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He would continue to beat down Finn Balor after the match and dropped him with the Reckoning on a chair before revealing that it was he who had attacked The Prince on that night. It makes sense for them to face off at NXT TakeOver: In Your House. This could be a great feud to establish Damian Priest as a star on NXT due to Finn Balor's record and his excellent selling ability.
It is unlikely that this is done on a random episode of NXT because this mystery attacker angle is likely to get the spotlight at In Your House.