Mementos, the Fateless

Reach, Indestructible
Graft 2
Whenever Mementos, the Fateless attacks or
blocks Fateseal 2 then put a +1/+1 counter on it.
When Mementos, the Fateless leaves play return
X permanents from your graveyard to the
battlefield, where X is the number of +1/+1
counters on it.