Taigam, Master Opportunist + Clockspinning + Nexus of Fate

Prerequisites

• You've cast exactly one spell this turn.

Steps

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

Effects

• Infinite turns
• Lock