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
Unmoored Ego and Crumble to Dust are the most reliable ways to answer all of your opponents copies of Field of the Dead
A major drawback from Cardhoarder, though, is that bulk cards and commons are always sold at 0.05 TIX, while GoatBots usually sells the same cards at only 0.005, meaning that you can get 10 cards for the price of one Cardhoarder common
If the Sol Ring plan doesnt work out, this could always salvage Chasing Adventure from mediocrity
This deck definitely wants Eternal Witness over Timeless Witness if you have Sun Titan
With flying, it dodges blockers while its Venom Blast ability forces every artifact and creature your opponents play to enter tapped