Ezekion, Lord of the Last

Fading 4 (This creature enters the battlefield with four
fade counters on it. At the beginning of your upkeep,
remove a fade counter from it. If you can't, sacrifice
it.)
Deathtouch
Whenever the last fade counter is removed from
an Aetherborn you control, that creature gets
+2/+2 and gains lifelink and double strike until
end of turn.