D&D4 Wiki
Attack bonus if proficient +2
Weapon die ([W]) 1d12
Type melee
Handedness two-handed
Proficiency category military
Weapon group
Weapon property high crit
Price 30 gp
Weight 12 lb.

A greataxe is a military two-handed melee weapon in the axe weapon group.[PH:218]

A greataxe has high crits, dealing an extra 1d12 damage at levels 1-10, 2d12 damage at levels 11-20, or 3d12 damage at level 21-30, on a critical hit.

Ardents, avengers, barbarians, battleminds, fighters, paladins, rangers, wardens, and warlords are proficient with all military melee weapons, including the greataxe.

Other classes do not have proficiency with the greataxe as a class trait, but any character can become proficient by taking a Weapon Proficiency feat.