Spirit Hound Fenris

Indestructible, Fear, Swampwalk, Deathtouch, Hexproof

If this creature isn't put onto the battlefield through the card Hela Goddess of Death, it loses Indestructible and Hexproof and becomes a 4/4.

When this card enters the battlefield, Hela Goddess of Death gains trample and hexproof.
When Fenris dies, all enchantments on the battlefield are exiled.