Ranger companion If the beast has 2d8+2 hp, does “normal max” mean 11, or 18?

Fighter Champion critical range and Vorpal Sword

Phantasmal Killer, frightened lasts duration period or until enemy Saves?

Nature’s Wrath and Turn Fey abilities are not very useful

If a Sorcerer casts a spell with only V S components using Subtle Spell, can it be Counterspelled?

If a Sorcerer casts a spell with only V and/or S components using Subtle Spell, can it be Counterspelled?