Can a Sorcerer swap out Cantrips when they level up?

If a Death Tyrant reanimates a PC, do the PCs HPs regain to full?

Does invisibility also end if a Bard uses their Bardic Inspiration?

Do creatures block a ‘clear path’ for fireball?

When a Dagger of Venom’s poison ability is used, does it do it’s normal melee dmg as well?

What does the Dungeon Master’s Guide mean by a “thing made of Magical Force”?

Can I use Great Weapon Master both strikes of Polearm Master?