Orb of Fate

Rolls a new random rarity, often none; item level and quality stay. Not on an item with a bound modifier.

What it does

Rolls a new random rarity, often none; item level and quality stay. Not on an item with a bound modifier.

Not on an item with a bound modifier.

Uniques, ruined items and stacks are refused; the crafting bench shows what an orb would do before you use it.

Used directly: Use with on the orb, then click the item.

Rerolls the values of a Rift Key's modifiers inside their ranges.

Source	How
Monster drops	Per kill by monster tier: Normal 0.2%, Magic 1.5%, Rare 6%, Legendary 25%, Boss 40%; 1 at a time. Legendary monsters and bosses also drop one guaranteed currency item, this one 14.3% of the time.
Salvage	Combine 60 rune shards into one at the crafting bench.
Salvage bonus	Salvaging gear with a rarity sometimes gives a whole orb (0.5%-5% per item by rarity); 3.7% of those are this one.
Bounty board	Per contract by level band: 0/0/0/0/1/2 (x1.5 for elite and boss contracts); weekly chest: 1/1/2/2/3/4.
Rift chest	0 + 0.06 per rift tier (fractions are a chance of one more), x the key's quantity bonus.
Sealed Coffer	0 + 0.03 per rift tier.
Omen guardian chest	2 per finisher.
World boss	1 for every eligible player, plus a share of 25 split by contribution.