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Can you use a Disarm, Shove or Grapple as your OA? I see no restrictions against it. Am I missing something?

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The key here is whether the "special attack" requires the attack action or just a melee or weapon attack. An opportunity attack is a melee attack. It is not an attack action. Therefore, special attacks which require an attack action cannot replace it, whereas special attacks which require only a melee attack can.


No for Grapple and Shove

From Sage Advice:

Grappling/shoving are part of the Attack action (PH, 195). Take the Ready action to grapple/shove outside your turn.


Yes for Disarming Attack (the fighter maneuver)

Disarming Attack:

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to disarm the target. (PHB 74)

Opportunity Attack:

you use your reaction to make one melee attack against the provoking creature. (PHB 195)

Melee Attacks

A melee attack typically uses a handheld weapon (ibid)

I think that it's fairly clear that an opportunity attack is a weapon attack, and can therefore become a disarming attack if the fighter expends a superiority die.


Yes for the Optional Disarm Rule (note that there is no disarm rule in the PHB)

Disarm Contest:

A creature can use a weapon attack to knock a weapon or other item from a target's grasp. (DMG 271)

As above, it only requires a weapon attack, not an attack action. However, you will need to ask your DM (if you are not the DM) as to whether they are using this optional rule.

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Yes, no and no.

A Disarming Attack requires a Battlemaster manoeuvre and a weapon attack that hits so the Opportunity attack qualifies.

Grapple says "... use the Attack action ..." and Shoving says "Using the Attack action ..."; an opportunity attack uses your reaction, not your action and specifically not an Attack action.

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  • \$\begingroup\$ @LinoFrankCiaralli Don't quite see what you are getting at: there is a difference between the Attack Action, a melee attack (which could use a spell, a weapon or an unarmed strike), and a melee weapon attack. Grapple and Shove are special attacks that replace an attack when you take the Attack action - not at any other time. \$\endgroup\$
    – Dale M
    May 30 '16 at 4:07
  • \$\begingroup\$ @LinoFrankCiaralli better take this to chat chat.stackexchange.com/rooms/40475/… \$\endgroup\$
    – Dale M
    May 30 '16 at 4:36

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