Historical Rules · 20 September 2024
Rule 701.54a
Official source text from the 20 September 2024 Rules release
To time travel means to choose any number of permanents you control with one or more time counters on them and/or suspended cards you own in exile with one or more time counters on them and, for each of those objects, put a time counter on it or remove a time counter from it. See rule 702.62, “Suspend.”