Dragonlance Pike

A dragonlance is a renowned weapon forged from rare metal with the aid of powerful artifacts associated with Bahamut. Different lances are forged for use by foot soldiers (as pikes) and by riders (as lances), but the magical properties of the weapons are the same. You gain a +3 bonus to attack and damage rolls made with this magic weapon. When you hit a Dragon with this weapon, the Dragon takes an extra 3d6 force damage, and any Dragon of your choice that you can see within 30 feet of you can immediately use its reaction to make a melee attack.

Heavy: Creatures that are Small or Tiny have disadvantage on attack rolls with heavy weapons. A heavy weapon's size and bulk make it too large for a Small or Tiny creature to use effectively.

Reach: This weapon adds 5 feet to your reach when you attack with it, as well as when determining your reach for opportunity attacks with it.

Two-Handed: This weapon requires two hands when you attack with it.

Proficiency: martial, pike Source: Fizban's Treasury of Dragons p. 23