Can I Dispel Magic beholder ray effect?

Can warlock Eld. Blast aim one beam at a target, move 20 feet then aim the 2nd beam at a different target?

Martial duelist

Can you be wearing heavy armor and still benefit from the Barbarian totem benefits?

Heward’s Handy Haversack

Can I use hex spell after an encounter at the next encounter with concentration all day?

Does the magic weapon spell work on natural weapons?

Is there a line of effect and does Wall of Force block it?