Check out our artifact-themed deck tech for Gau here
Pharika, God of Affliction Mostly, I hate that your opponent gets the snake tokens, but when an Eldrazi comes along that can return exiled creatures to play (itll happen!) then this will get a lot better
You need to actually be playing blue which not every deck at lower tables is
If Havi loses indestructible (probably because one or more historic cards in your graveyard left your graveyard) after having been dealt lethal damage earlier in the turn, it will die
They are one of the best creature tutor effects out there
See my best card draw lists for the other colors blue, green, red, colorless, and white