Taigam, Master Oppurtunist, Clockspinning, and Time Walk

Prerequisites

• Taigam, Master Oppurtunist on the battlefield
• Clockspinning in hand
• Time Walk in hand
• the first turn with each other turn available

Steps

1. Cast Time Walk by paying its mana cost
2. Taigam triggers, copying Time Walk and exiling the original Time Walk with four time counters on it
3. Resolve the Time Walk copy, causing you to take an extra turn after this one
4. Cast Clockspinning with buyback by paying , removing a time counter from Time Walk and returning Clockspinning to your hand
5. Repeat step 4 one additional time
6. Move to your next turn
7. At the beginning of your upkeep, Time Walk's suspend ability triggers, removing a time counter from it
8. Cast Clockspinning with buyback by paying , removing a time counter from Time Walk and returning Clockspinning to your hand
9. Time Walk's suspend ability triggers, causing you to cast it from exile without paying its mana cost
10. Repeat from step 2

Results

• Infinite turns