Divine Intervention has at least one intervention counter on it.
({U} magic symbol) , plus ({3} magic symbol) ({U} magic symbol) available for each intervention counter on Divine Intervention beyond the first available.
Steps
If Divine Intervention has exactly one intervention counter on it, cast Clockspinning by paying ({U} magic symbol) .
Otherwise, cast Clockspinning with buyback by paying ({3} magic symbol) ({U} magic symbol) .
Resolve Clockspinning, removing an intervention counter from Divine Intervention, and returning Clockspinning to your hand if the buyback cost was paid.
If the final counter was removed this way, Divine Intervention's second ability triggers, causing the game to end in a draw.