Fortune's Favor
Fortune's Favor is a pity system introduced to the Invention skill to maintain balance. After failing an Invention upgrade, the chance of succeeding will increase by 5%. (This is reset on successful upgrades)
Your Fortune's Favor is displayed underneath the success rate of the item you're trying to upgrade, like this: 
Success rates
Solrot Armor and Weapons
- Upgrading to Solrot T0 > Fortune Favor will now guarantee a successful upgrade of any base Solrot item upon 3 failed attempts.
- Upgrading to Solrot T1 > Base rate of 55%. You gain +5% success rate for each fail, untill success.
- Upgrading to Solrot T2 > Base rate of 50%. You gain +5% success rate for each fail, untill success.
- Upgrading to Solrot T3 > base rate of 35%. You gain +5% success rate for each fail, untill success.
- Upgrading to Solrot T4 > base rate of 25%. You gain +5% success rate for each fail, untill success.
- Upgrading to Solrot T5 > base rate of 15%. You gain +5% success rate for each fail, untill success.
Rings Amulets and Slayer helmets
- Warrior-, Berserker-, Archer-, Seers ring -> Warrior- (i), Berserker- (i), Archers- (i), Seers ring (i)
Does NOT gain any Fortune's Favor, has a flat 20% success rate.
- Ring of wealth (i) -> Ring of greed, Ring of precision
Base rate: 25% -> Maximum cap: 50% (6 fails). After 3 fails you then start gaining 5% increased sucess rate upon each fail until cap.
- Combo trinket -> Ring of influence
Base rate: 10% -> Maximum cap: 25% (6 fails). After 3 fails you then start gaining 5% increased sucess rate upon each fail until cap.
- Shiny charm -> Shiny charm (i)
Base rate: 15% -> Maximum cap: 30% (6 fails). After 3 fails you then start gaining 5% increased sucess rate upon each fail until cap.
- Molten-, Atomic-, Cold fusion amulet -> Molten- (i), Atomic- (i), Cold fusion amulet (i)
Base rate: 20% -> Maximum cap: 35% (8 fails). After 5 fails you then start gaining 5% increased sucess rate upon each fail until cap.
- Slayer helmet (melee), -(ranged), -(magic) -> Hellion, Deadeye, Occult
Base rate: 20% -> Maximum cap: 35% (8 fails). After 5 fails you then start gaining 5% increased sucess rate upon each fail until cap.
- Spiritual sigil -> Spiritual ring
Does NOT gain any Fortune's Favor, has a flat 15% success rate.
Upgrading different items
Let's say that you are in the middle trying to upgrade your Solrot's staff T2 into Solrot's staff T3 and have +10% Fortune's Favor but you decide to upgrade your Ring of wealth (i) into Ring of greed. The +10% from your Solrot's staff T2 does not affect the success rate of your Ring of walth (i) upgrade. And if you succeed in upgrading your ring into the Ring of greed, you still have +10% Fortune's Favor when going back to upgrading your staff.