Would allow Detect Magic a creature under the effects of invisibility spell?

doubt: first sentence on “detect magic” would allow a player to detect a creature under the effects of invisibility spell?
but the user would be able to pinpoint the direction? would he know that there is someone invisible?

How does the target of a Mystic’s Psionic attacks know they’re being attacked?

If a PC has prof in Intimidate, does that apply to Intimidate (Str) or just to Intimidate (Cha)?

Sentinel Shield says, “While holding this shield”, you get it’s benefits…

What happens when you cast Revivify on someone who has been killed by a shadows Strength Drain?

Why not include proficency bonus on monsters’ stat blocks?

Would throwing an improvised weapon, like table leg, use Str or Dex for the attack roll?

The updated link is here: http://media.wizards.com/2017/dnd/downloads/SA-Compendium.pdf

How do you suggest handling the party gaining too much wealth?