If a character with flying is restrained, can he keep flying?
Example: some angel is 40ft. in the air. The ranger fires an Ensnaring Strike, which lands on the angel. Can the angel remain 40ft. up in the air?
Ensnaring Strike mentions:
The next time you hit a creature with a weapon attack (...), the target must succeed on a Strength saving throw or be restrained by the magical vines until the spell ends.
The restrained condition mentions:
A restrained creature’s speed becomes 0, and it can’t benefit from any bonus to its speed.
Attack rolls against the creature have advantage, and the creature’s attack rolls have disadvantage.
The creature has disadvantage on Dexterity saving throws.
Is flying considered a speed bonus? Do you expend speed to keep flying?