Erlking's Flight

At the beginning of your upkeep you lose 1 life
and create a 1/1 black and green Erl creature
token. It has "When this creature dies surveil 1."
{1}{b}{g}, Sacrifice a creature: Up to two target
creatures gain lifelink until end of turn.
"Who rides there so late through the night
- dark and drear?
The father it is, with his infant so dear"