Rules glossary
500.5 As a step or phase ends, if there are effects that last until the end of that step or phase, those effects expire. Then any unspent mana left in a player’s mana pool empties. This is a turn-based action that doesn’t use the stack (see rule 703.4q).
- 500.5a Effects that last “until end of combat” expire at the end of the combat phase, not at the beginning of the end of combat step.
- 500.5b Effects that last “until end of turn” are subject to special rules; see rule 514.2. (refs: 514.2)