Vivi Ornitier + Hero's Blade + Displacer Kitten + Whim of Volrath

Vivi Ornitier

Hero's Blade

Displacer Kitten

Whim of Volrath

How it works

1. Cast Whim of Volrath with buyback by paying 2.
2. Displacer Kitten and Vivi trigger.
3. Resolve the Vivi trigger, putting a +1/+1 counter on it and dealing 1 damage to each opponent.
4. Holding priority, activate Vivi by paying 0, adding at least U/RU/RU/R.
5. Resolve the Displacer Kitten trigger, blinking Vivi.
6. When Vivi enters the battlefield, Hero's Blade triggers, attaching Hero's Blade to Vivi.
7. Resolve Whim of Volrath, returning Whim of Volrath to your hand.
8. Repeat.