Bard: when leveling up can you switch out more than one spell or is it as written one spell?

If an undead is concentrating on a spell and a Cleric uses Turn Undead does that undead make a concentration check?

Can you use a longbow in melee to get Great Weaon Master and Sharpshooter in a single attack for +20 damage?

Can a player charm monsters into marrying them and then hoard their corpses for a massive AC superstack?

If a druid is being tracked by scent using a Ranger’s animal companion and beast shapes into an animal…

Spiritual Weapon: does it mean it’s incorporeal and can cross walls and objects?

Does Orchish fury and Savage attack damage apply to features like Sneak attack or Divine smite?

What is the definition of humanoids, can they have more then 2 legs and 2 arms?