Goblin and Orc magic items tend to lean towards the very aggressive !
They actually have some great offensive items, here are my favourite, those I think pack the most punch per point spent.
1) Battleaxe of the last WAAAGH! (100 pts - orc only)
WHY ? : because it's awesome
Attacks + rank bonus and Strength + rank bonus
Note: rank bonus maximum is 3
2) Basha's Bloodaxe (50 pts - orcs on foot only)
Frenzy = +D6 additinal attacks instead of 1. Also, +1 str in first round of combat.
Note: it's unpredictable and great fun but your character cannot join a unit so shield him with other troops until he's in combat.
3) Kull Wand of Kaloth (40 pts - Shaman Only)
Note: use an Orc shaman if you take this).
WHY ? : because it ignores all saves
Use it vs high toughness, low Leadership enemies)
Enemy unmodified leadership test on each hit. Failure = DEATH (no saves of any kind whatsoever !!!)
Note: this one is a risky last resort, your shaman is vulnerable and may never get the chance to use it but it's a last gasp attempt to turn the tide of battle - and it will scare all your opponents :)
4) Lucky's Dirk (10 pts - gobbos only)
WHY ? : because it's cheap (10 pts)
+1 str per magic item the enemy has (note: a dwarf item with multiple runes counts as only 1 item)