Dragon halberd

The dragon halberd is the strongest halberd available, as well as the most accurate dragon weapon in the game. It requires completion of Regicide to wield, as well as 60 Attack and 30 Strength. Like all halberds, the dragon halberd has the ability to attack from one extra square away, and is thus the only melee weapon type usable for safespotting. It can be purchased from the Quartermaster at Tyras Camp for 325,000 coins, or bought from the Grand Exchange or another player for a substantially lower price.

Sweep, the dragon halberd's special attack, deals extra damage and will hit twice against large monsters (those that take up more than one square of space). In a multicombat zone, Sweep can hit up to three normal-sized targets at once if they are properly lined up next to each other. Each use drains 30% of the special attack bar. It is possible to hit 700-700, if on slayer assignment on Ice strykewyrm, fire cape, full slayer helmet, maxed turmoil, extreme strength potion and +139 strength bonus.

The weapon's extra square of reach, high offensive bonuses, and powerful special attack make it useful for fighting certain large monsters from safe spots, this makes Dragon Halberd the best weapon to replace dragon dagger when fighting larger monsters. The downsides include the quest requirement to wield it, the fact that it is a two-handed weapon (and thus cannot be wielded with a shield or defender), its slow attack speed and it is not a good weapon for pking.

Large monsters
'''Note: A monster is considered "large" if it takes up more than one square of space. It is also considered "large" if it is tall enough.'''
 * Aberrant spectres
 * Aquanites
 * Avatar of Creation and Avatar of Destruction
 * Banshees and mighty banshees
 * Bears
 * Bloodveld
 * Brawlers
 * Catablepon
 * Cave crawler (level 138)
 * Cave horrors
 * Chaos Dwogres
 * Cockroaches:
 * Cockroach soldiers
 * Cockroach workers
 * Cows
 * Cyclops (Cyclossus cannot be fought without a rune or dragon defender equipped)
 * Demons:
 * Lesser demons
 * Greater demons
 * Tormented Demons
 * Black demons
 * All varieties of dragons, including baby dragons
 * Giants:
 * Hill giants
 * Moss giants
 * Ice giants
 * Fire giants
 * Giant bats
 * Giant Rock Crabs
 * Hellhounds
 * Kalphites
 * Monkey Guards
 * Mounted terrorbird gnomes
 * Ogres
 * Ourg statues
 * Portals in Pest Control
 * Scorpions
 * Suqah
 * Tortoises
 * Turkeys from the 2009 and 2010 Thanksgiving events
 * Unicorns
 * Warped tortoises
 * Wolves and dire wolves
 * Yaks
 * Most of the TzHaar Fight Cave monsters
 * Various boss monsters: Nomad, Bork, the Chaos Elemental, the Kalphite Queen, the Giant Mole, the King Black Dragon, God Wars Dungeon generals (except for General Kree'arra, who cannot be attacked by melee despite the extra reach of the dragon halberd), Dagannoth Kings and the Corporeal Beast

Trivia

 * It was possible for Sweep to strike a small target twice in a multicombat zone; this requires the setup shown to the right. This bug has been fixed.
 * Of dragon weapons, only the dragon two-handed sword has a higher strength bonus than the dragon halberd, at +93. However, the dragon halberd is the most accurate dragon weapon, both in terms of stab and slash (though a dragon longsword combined with a dragon defender gives a greater stab bonus than the halberd alone). Whether it delivers the greatest amount of damage per second compared to other dragon weapons is an open question and is best left to individual players to determine for themselves.
 * The blade of the halberd resembles a dragon's wing.
 * There is currently a minor graphical glitch in which the tail end of the halberd sinks into the ground when it is wielded.
 * When using the special attack, you can hear a slight roar of a dragon.
 * When sold or bought in the Grand Exchange, and check your collection box, no image will appear.
 * When using the Slash attack option, when the halberd is being pulled back to make the swing, the blade is shown backwards.

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