During the cleanup step, what happens to effects that last "until end of turn"?

During the cleanup step, effects that last "until end of turn" end simultaneously with damage removal. This is a specific aspect of the game that ensures all temporary effects affecting permanents or players conclude when the cleanup step resolves.

To elaborate, the cleanup step is the final step of the turn, where players discard down to their maximum hand size (usually seven cards), and any damage marked on creatures is removed. This moment also signifies the termination of various effects that are set to last only for the turn. Since effects that last "until end of turn" are defined by their duration ending at the conclusion of any turn, they all end at once in the cleanup step.

Other choices do not accurately reflect how these effects operate during the cleanup step. For instance, effects do not persist into the next turn, nor do players get a choice on whether they want to end them, as they automatically conclude when damage resolves. Additionally, these effects are certainly not ignored; they are a fundamental part of game mechanics that must be resolved at the proper time.