Wand of the War Mage, +1, +2, or +3

Source: D&D 5.2 SRD Magic Items

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 roll.