Making a grapple requires you to take the attack ACTION. You only get the option to take an attack action on your own turn. Making a melee weapon attack, as an attack of opportunity is not an attack action. You can’t grapple or shove with an attack of opportunity.
How do you not provoke an opportunity attack in 5e?
You can avoid provoking an opportunity attack by taking the Disengage action. You also don’t provoke an opportunity attack when you teleport or when someone or something moves you without using your movement, action, or reaction.
Is grapple a melee attack?
Grappling and shoving are melee attacks Using the Attack action, you can make a special melee attack to shove a creature, either to knock it prone or push it away from you.
Can You grapple a creature as an opportunity attack?
When you want to grab a creature or wrestle with it, you can use the Attack action to make a special melee attack, a grapple. If you’re able to make multiple attacks with the Attack action, this attack replaces one of them. (PHB pg.195) You can make an opportunity attack when a hostile creature that you can see moves out of your reach.
How many actions does a grapple creature need?
Since it requires 2 or 3 successful actions (2 special attacks and 1 action) which can be undone by a single successful shove or escape grapple action by the grappled creature, it really only benefits the party in situations where the opponent is truly helpless.
How many manacles do you need to be a grappler?
Therefore, manacles, which would impose a worse condition than restrained, must require at least two successful grapple checks, and probably much more than that in order to not make the Grappler feat (totally) worthless. Second, spells.
Why do manacles invalidate a number of mechanics?
Because manacles basically impose the incapacitated condition, they can invalidate two important mechanics: the Grappler feat and a number of spells. First, the Grappler feat. Ordinary grappling doesn’t really impose any restrictions on a creature–they can’t move away, but they are otherwise unhindered.