At the beginning of your upkeep, Tamiyo's Journal triggers, creating a Clue artifact token.
At the beginning of your combat phase, Workshop Elders triggers, causing the Clue to become a 0/0 artifact creature token and putting four +1/+1 counters on it.
Activate Isochron Scepter by paying ({2} magic symbol) and tapping it, casting a copy of Bioshift without paying its mana cost, targeting the Clue that has +1/+1 counters on it and Sage of Hours.
Sage of Hours triggers, putting a +1/+1 counter on itself.
Resolve Bioshift, moving the four +1/+1 counters from the Clue onto Sage of Hours.
The Clue dies as a state-based action due to having 0 toughness.
Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.