Cast Rune-Tail, Kitsune Ascendant.
Rune-Tail, Kitsune Ascendant flips due to having 30 or more life.
Since creatures can not take damage and Protector of the Crown prevents you from taking damage, you are unable to take damage.

Creatures you control can't be dealt damage

You can't be dealt damage

Rune-Tail, Kitsune Ascendant // Rune-Tail's Essence

Protector of the Crown

Give Protector of the Crown indestructible, if needed.
Cast Arcbond by paying {2}{R}, targeting Protector of the Crown.
Deal damage to Protector of the Crown.
Arcbond triggers, dealing damage to each creature and player equal to the damage dealt to Protector of the Crown, with the damage that would be dealt to you being dealt to Protector of the Crown instead.
Repeat from step 4.

Combos with "Protector of the Crown"