Mogo, Sentient Guide of Hope

Whenever Mogo, Sentient Guide of Hope enters the battlefield, you may search your graveyard for any three Green-Lantern type creatures with mana value {2} or less and put them into the battlefield tapped.
As long as you control six Green-Lantern type creatures on the battlefield at once, Mogo, Setient Guide of Hope gains hexproof and flying.