Displacer Kitten + Throne of Eldraine + Seething Anger

Displacer Kitten

Throne of Eldraine

Seething Anger

How it works

1. If able, activate Throne of Eldraine's first ability by tapping it, adding that can only be spent to cast red monocolored spells.
2. Cast Seething Anger with buyback by paying 3, targeting Displacer Kitten.
3. Displacer Kitten triggers, blinking Throne of Eldraine. Choose "Red" as it enters the battlefield.
4. Resolve Seething Anger, giving Displacer Kitten +3/+0 until end of turn, and returning Seething Anger to your hand.
5. Repeat.