Corundum, Sapphire Slayer

Vigilance, Hexproof
When Corundum, Sapphire Slayer attacks, if blocking opponent controls three or less creatures, create a 3/3 white, blue, and black golem creature token with vigilance, tapped and attacking that player.
At your post-combat phase, if you dealt combat damage to an opponent, draw two cards and you gain three life.