What is shield master 5e?

Shield Master is a feat in Dungeons and Dragons 5th Edition that focuses on improving a character's shield use. The feat grants the following abilities:

1. You can use your bonus action to shove an opponent within 5 feet of you.

2. You gain proficiency in Dexterity saving throws while wielding a shield.

3. You can use your shield to protect against some area-of-effect spells, taking no damage if you succeed on a Dexterity saving throw.

Overall, the shield master feat is useful for characters who prioritize defensive tactics and want to be able to control the battlefield.