Godfrey, First Elden Lord

Vigilance, First-Strike
Whenever Godfrey, First Elden Lord attacks,
create a 4/4 white Cat Spirit creature token that's tapped and attacking. Exile that token at the end
of combat.
At the beginning of your upkeep, if your life total
is less than or equal to half of your starting life
total, exile Godfrey, First Elden Lord and return
it to the battlefield transformed.