Does Assault Might count towards Baited Hook?

Yes, the Might granted by Assault counts toward Baited Hook.

According to the Baited Hook rules, the ability references the unit's "current Might" at the moment it is killed. Because Assault is a passive ability that modifies a unit's Might while it has the "Attacker" designation (Rule 807.1.c), that bonus is included in the unit's total Might.

If you kill a unit that has an active Assault bonus, Baited Hook will use the unit's total current Might (base + active bonuses) to determine the threshold for the unit you can search for and play.

Note: This interpretation is based on the general rule that Baited Hook checks a unit's current Might (as confirmed in FAQ #8885). No official FAQ exists for this specific interaction, but since Assault is a continuous, passive modifier to Might, it is treated as part of the unit's current Might.