Enzo, Beckoning Warlock

Whenever a player loses life, if it is their first
time losing life this turn, put a +1/+1 counter on
Enzo, Beckoning Warlock.
At the beginning of your upkeep, you gain life
equal to the number of +1/+1 counters on Enzo.
Remove six +1/+1 counters from Enzo: Gain
control of target creature.