The Coffelock might be the most infamous build in Dungeons & Dragons 5e because it immediately breaks the entire game by granting a player access to an infinite amount of spell slots.
A Coffeelock build takes advantage of some likely unintended interactions between Sorcerer and Warlock class features. Sorcerers can convert spell slots into Sorcery Points and then use those points to create smaller, temporary spell slots that disappear during a long rest. Warlocks get a handful of spell slots that refill on every short rest, and the Aspect of the Moon Eldritch Invocation essentially lets them permanently replace a long rest with four short rests. By repeatedly taking short rests, the Warlock class provides an infinite supply of Sorcery Points that turn into an infinite number of new spell slots.
Of course, no sane DM lets their players make a Coffeelock, but Baldur’s Gate 3 isn’t a typical DM. The game doesn’t ban you outright from using the Warlock spells to Sorcery Point conversion, but its mechanics nerf the Coffeelock pretty severely.
The problem with resting
The biggest issue with building a Coffeelock in Baldur’s Gate 3 is that the game locks you in at two short rests per day. That severely limits the amount of Sorcery Points that a Coffeelock can create by converting their Warlock spell slots. Because it also doesn’t offer Warlocks the Aspect of the Moon invocation, they’ll eventually need to take a long rest and will lose any spell slots that they created with Sorcery Points.
The other problem is that the game’s level cap is at 12. Coffeelocks have to be more careful about how they balance their multiclassing. Taking five levels in Warlock and seven in Sorcerer is probably the best balance possible. That unlocks third level Warlock spell slots and fourth level Sorcerer slots, but it’s far from a true Coffeelock.
That Coffeelock build can create, at most, 18 Sorcery Points each day. Add in the Sorcery Points it starts with each day, and the total comes to 25. That sounds like a lot, but when a single quicken spell Metamagic costs three points, and a single third level spell slot costs five, you’ll burn through your supply pretty quickly. You might be able to create a build that feels a bit like a standard Coffeelock, but the best Sorcerer build focuses on damage over shenanigans.
