Displacer Kitten + Throne of Eldraine + Clockspinning

Displacer Kitten

Throne of Eldraine

Clockspinning

How it works

1. If able, activate Throne of Eldraine's first ability by tapping it, adding that can only be spent to cast blue monocolored spells.
2. Cast Clockspinning with buyback by paying 3, targeting Displacer Kitten.
3. Displacer Kitten triggers, blinking Throne of Eldraine. Choose "Blue" as it enters the battlefield.
4. Resolve Clockspinning, returning it to your hand.
5. Repeat.