Thalia's Lieutenant

Oracle Text
When Thalia's Lieutenant enters the battlefield, put a +1/+1 counter on each other Human you control.
Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Thalia's Lieutenant.
Card Rulings
4/8/2016 If Thalia’s Lieutenant enters the battlefield at the same time as another Human, each of Thalia’s Lieutenant’s abilities will trigger. You’ll put a +1/+1 counter on both cards.
Interesting
Hold some mana at turn 6 and use Inspiring Call in response to a Chandra, Flamecaller.
However, if they use Languish -> gg