Rayne Man, Renegade Shopkeep

Menace
Rayne Man, Renegade Shopkeep enters the battlefield with an additional 1+/1+ counter for each 2 points of life you've lost this turn.
{u/r} Remove a counter from target permanent: Add a +1/+1 counter to target creature.
{b},{t},Remove all counters from target permanent you control: Target player loses 1 life for each 2 counters removed, rounded up.