Bash (Diablo III)

Bash is a Primary skill.

In-game
Hits a single enemy within 6 yards of the Barbarian (a little bit farther than a normal melee blow), essentially an empowered basic attack. Has the highest single-target damage, as well as highest Fury generated, among all Primary skills.

Fury generation note
The fury is only generated if an enemy is actually hit with the attack: there's no gain if one shift-clicks to attack thin air.

Runes

 * Frostbite: Damage type changes to Cold, and enemies hit by Bash are Frozen for seconds. The same enemy may not be frozen more than once every  seconds by this rune.
 * Onslaught: Damage type changes to Lightning. If an enemy is hit by Bash, it suffers a increased chance of being critically struck in battle for  seconds. This effect does not stack.
 * Punish: Hitting enemies with Bash will increase all damage done by for  seconds. This can stack up to  times and is not multiplicative with other similar modifiers.
 * Instigation: damage type changes to Fire and increases Fury generated to per attack.
 * Pulverize: damage type changes to Fire, and each Bash also releases a yards long,  yards wide piercing wave that hits all enemies in line for  damage as Fire. This does not include the primary target: only enemies behind the target are affected by the wave.

Non-rune enhancements

 * Depth Diggers (Legendary Pants): damage increases by 80-100%.
 * Simplicity's Strength (Legendary Gem): increases damage by 25% (+0.5% per rank) and heals the character for 4% of maximum Life per hit (rank 25 bonus).
 * Boyarsky's Chip (Legendary Gem): Taunts the first enemy hit for 2 seconds (rank 25 bonus).
 * Blade of the Warlord (Legendary Mighty Weapon): after cast, consumes up to 40 Fury, but for every point of Fury consumed, deals 10-12.5% increased damage (to a total of up to 400-500%).
 * Oathkeeper (Legendary Mighty Weapon): attacks 50% faster and deals 150-200% increased damage.
 * Vambraces of Sescheron (Legendary Bracers): each damaging cast heals the Barbarian for 5-6% of missing (not maximum) Life.