Aging Sensei

Aging Sensei enters the battlefield with four
+1/+1 counters, your choice of a first strike or
deathtouch counter and your choice of a
vigilance or menace counter on it.
Whenever a creature enters the battlefield
under your control, if it's attacking, you may
remove up to one +1/+1 counter and up to one
other counter from Aging Sensei. When you
do, put that many of those counters on that
creature.