Prestiging a class costs 1625 Cealts. A full clear yields 70 Cealts. That's 23.2 clears to earn one Prestige the slow way. Here's how to think about it.
The Cealt Grind Math
70 Cealts per clear / 1625 per Prestige = 23.2 clears. At 26.67 minutes per session (the average session length per the alpha stats), that's roughly 10.3 hours per Prestige. The Robux exchange drops the cost to roughly 4 hours of farming at minimum wage.
Tier 5 Bulk Exchange
500 R$ for 300 Cealts. That's 1.66 R$ per Cealt. To fund one Prestige at Tier 5: 500 * (1625/300) = 2708 R$. The Robux conversion is faster but real-money. The grinding is slower but free.
Which class to prestige first
The Artificer (Mage subclass) is the meta-first-pick. The Prestige bonus applies account-wide once you reach Full Prestige on all 7 classes (+5% all stats), so the order doesn't matter long-term. But the Artificer has the easiest 23-clear grind due to the Turret doubling action economy.
Boon Loadout for the Grind
Predation (60 Cealts, 2 slots), Long Rest's Well Rested (15 Cealts, 1 slot), Energy Conserver (25 Cealts, 1 slot). 100 Cealts, 4 slots. The Energy Conserver stacks with Mana Beam's logarithmic scaling — at 200 INT, the Mana Beam hits 200+ damage per cast.
Common Pitfalls
Spending Cealts on Race unlocks before Prestige. The Withered Race costs 300 Cealts; Lunaeia costs 500. That's 800 Cealts that would otherwise be 50% of a Prestige. Save the first 1625 Cealts for the Prestige; race unlocks come after.