
In further versions, searching for " diablo 3 legendary drop rates " should get you there. David Fisher Kanai's Cube's functions can be a bit misleading, so here's a simple guide on how you can acquire and learn to use one for yourself In Diablo III: Reaper of Souls patch 2.3.0, Blizzard added the Kanai’s Cube to the game. You can check here for a table of all weights and drop chances for 2.4.2. Hence, every time you roll for a legendary 2H Mace as a Wizard, you have 25/475 = 5.26% chance to get The Furnace, 50/475 = 10.53% chance to get a Wrath of the Bone King, and 100/475 = 21.05% chance to get each of four other maces.

Skywarden - 100 - does not drop for Wizard.When your Meteor hits 3 or fewer enemies, the damage is increased by 675-900. Nilfur’s Boast: Increase the damage of Meteor by 600. For example, here are all the Legendary two-handed maces and their weights: Mega Meteor for Wizard The Grand Vizier: Reduces the Arcane Power cost of Meteor by 50 and increases its damage by 300-400.

When the game chooses which legendary to drop, it uses weights that determine how rare or common each legendary is. Hence, to get The Furnace, you need to be upgrading a Rare Two-handed Mace (you can either find one, or craft a Sovereign Persuader at the Blacksmith).

When you use "Hope of Cain" recipe to upgrade a rare item to a legendary, the game creates a random item of type and level that the rare item was.
