Viscount's Cane

The Viscount's Cane is a summon weapon that is dropped by the Viscount. It spawns a Blood Drinker that flies and melee attacks enemies, storing a "blood" value each time it hits (up to a maximum of 20 blood). When the Blood Drinker returns to the player's side, it will expend the stored blood, healing the player by the same amount of life as blood was collected. Like other minions, summoned Blood Drinkers are invincible and follow the player for an unlimited amount of time, unless the player dies, summons a replacement minion, or cancels the buff. Additionally, Blood Drinkers cost 2 minion slots each to summon.

Trivia

 * This item is one of five (the others being the Taboo Wand, Beholder Staff, Steamgunner Controller, and Ember Staff) Summon weapons that have a minimum requirement to use, requiring 2 minion slots to summon 1 of its minion.