Vylan's Lengthy Speech

As an additional component to Vylan's Lengthy Speech , you must remain speaking the entire duration of the spell. 

When you cast this spell, choose up to 5 creatures you can see and that can hear and understand you. Those creatures cannot attack, cast spells, or move outside of the range of the spell until the spell ends or they succeed on a DC 14 WIS saving throw.

The spell immediately ends if you stop speaking for more than five seconds or if any creature in range (including you) is attacked. If the latter occurs, you are considered Surprised.