Can an invisible creature be hit by a spell that targets “a creature you can see”?

Does Slayer’s Prey mean I can use it as many times as I’d like per short rest, but only on one creature at a time?

Toll the Dead spell, Does 1d12 dmg mean they do not get a save if they are missing health?

Surprise rules, does a character even have a reaction to take before the start of their first turn? I

Jump to another target: what happens when someone rolls a Critical Hit on Chaos Bolt?

The right most picture of Diagram 2.5: Cones Using Tokens in XGtE violates how cone effects are described on PH 204