Wand of the War Mage, +1, +2, or +3
Wanduncommon (+1), rare (+2), or very rare (+3)requires attunement
While holding this wand, you gain a bonus to spell attack rolls determined by the wand's rarity. In addition, you ignore half cover when making a spell attack.
Source: 5e Core Rules · OGL-1.0a · 5.1