Bartender, Unfailingly Polite

Graft 1 (This permanent enters the battlefield with a +1/+1 counter on it. Whenever another creature enters the battlefield, if this permanent has a +1/+1 counter on it, you may move a +1/+1 counter from this permanent onto that creature.)
At the beginning of your upkeep, you gain 1 life.
Whenever another creature you control enters
the battlefield, Bartender, Unfailingly Polite gains a +1/+1 counter.