Astjarna, Solstice of Valor

Flash, flying, vigilance
Sparktouch (Damage dealt by the creature also causes
a Planeswalker you control to gain that much loyalty.)
All combat damage that would be dealt to Planeswalkers you control is dealt to Astjarna, Solstice of Valor instead.
Pay 4 loyalty: Regenerate Astjarna, Solstice of
Valor.