Gatstaf Cairns

As Gatstaf Cairns enters the battlefield, you may reveal a Human card from your hand. If you
don't,Gatstaf Cairns enters the battlefield tapped.
({t}: Add {w} to your mana pool.)
Whenever a Human you control attacks alone, that creature gets +1/+1 until end of turn.
"May the spirits of their ancestors guide them in these dark times." - Glather, Gatstaf Elder