Frances, Forgotten Kyria

Haste, Hexproof, Flying,
Lifelink, Doublestrike, Flash
{u}{r}: Regenerate target creature
{u}{r}: Target creature phases out
Whenever a creature dies, you may return it to
the battlefield under your control with a
Valhalla counter on it.(It gains Flying)
If a creature would die while it had a
Valhalla Counter on it, exile it instead.