Wand of the War Mage +1, +2, or +3
Wand, uncommon (+1) rare (+2) or very rare (+3) (requires attunement by a spellcaster)
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.
Dungeon Master´s Guide (SRD)