On claiming of Duel winnings, a 4% fee is taken to fund the Incentives Pool - half of this (2%) from the Winner's stake, and half from the Loser's stake.
See below for how the Incentives Pool is used.
Excalibur (1.5%)
Excalibur is a global effect that chooses Duel victors at random and grants them a massive reward that accumulates in a pool the longer someone goes without winning it. 1.5% of all ETH staked is added to the Excalibur pool, with 100% of it going back to players. For more, see Excalibur
Players earn Cashout Tickets for dueling. Every week, a number of Cashout winners will be drawn based on these Tickets, to win massive ETH prizes.
Treasury & Other Incentives (0.5%)
The remaining amount accumulates to the Cambria Treasury as protocol fees or is used to fund various incentive programs / growth / creator programs, up to our discretion.