Were actually relying on our opponents having access to creatures to attack our opponents with in the first place, so were relying more on Curse of the Swine and Reins of Power to get the job done
Its not super-exciting, as you frequently want your sideboard interaction to be streamlined and efficient, particularly when combating problematic artifacts and enchantments
You can build around it with indestructible things, more spells than permanents, like swapping Phyrexian Arena for Sign in Blood and Eternal Witness for Regrowth and Sensei's Divining Top for Brainstorm
The 2 main shafts (the tall ones) have 3 disks with flat edges, intended for U-shaped "O-rings" or plasti-dip
A hybrid Phyrexian mana symbol is counted the same way as a normal mana symbol when determining the mana value of a card
Standout Cards Emerald Dragon needs printed with the old border, because it feels like such a break that it could have been printed in 1997