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
Simply fill your deck with instant- and sorcery-based ramp, removal, and copies of Slime Against Humanity, and build up to a board state thats ridiculously wide and capable of double-casting any spell you want
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
See my best card draw lists for the other colors blue, green, red, colorless, and white
Check out our artifact-themed deck tech for Gau here