Kalyss, Heaven's Gatekeeper

Flying, Lifelink
Whenever another creature you control
without a -1-1 counter dies, return it to the
battlefield with two -1-1 counters on it.
Whenever Kalyss blocks, create a 4/4 angel
creature token with vigilance and flying.
Whenever Kalyss dies, create 2 4/4 angel
creature tokens with vigilance and flying.