Faethyn Unicorn

When Faethyn Unicorn enters the battlefield,
if you cast it, you gain life equal to the number
of creatures you control with a soul counter on
them.
Pay 1 life: Faethyn Unicorn gets +1/+0 until
end of turn.
"Unicorns are graceful creatures, but most folks underestimate just how devilishly dangerous they
are."