Sage of Hours + Isochron Scepter + Bioshift + Workshop Elders + Tamiyo's Journal

Sage of Hours

Isochron Scepter

Bioshift

Workshop Elders

Tamiyo's Journal

How it works

1. At the beginning of your upkeep, Tamiyo's Journal triggers, creating a Clue artifact token.
2. 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.
3. Activate Isochron Scepter by paying 2 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.
4. Sage of Hours triggers, putting a +1/+1 counter on itself.
5. Resolve Bioshift, moving the four +1/+1 counters from the Clue onto Sage of Hours.
6. The Clue dies as a state-based action due to having 0 toughness.
7. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
8. Repeat each turn.

This clever engine turns everyday clues into an infinite-turn machine by weaponizing Bioshift alongside Isochron Scepter to continuously fuel Sage of Hours. Every turn cycle begins with Tamiyo's Journal generating a Clue token, which Workshop Elders then animates into an artifact creature while stacking it with four +1/+1 counters. Isochron Scepter continuously recasts Bioshift to strip those counters off the dying Clue and slide them onto Sage of Hours, letting you cash them in for infinite extra turns.