Historical Rules · 8 March 2024
Rule 701.54a
Official source text from the 8 March 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.”