If Stand United is played Hidden from one battlefield, does its global effect (+1 to all buffs) apply to units on the opposite battlefield?

Ruling: Yes, the second effect of Stand United (+1 to all buffs) is global and affects all friendly units on both battlefields.

Nuances:

• When played from Hidden, Stand United's targeting effect (placing the buff token) has an added "here" restriction and must target a unit on the same battlefield
• The global +1 effect does not target, so it is not restricted by the "here" limitation and applies to all friendly units regardless of battlefield