The vast majority of cards are inexpensive and meant for playing rather than hoarding
For smaller quantities, you can find singleton packs of these sleeves at your LGS or on Amazon
The additional 1 damage from Far Fortune's last ability is dealt by the same source as the original source of damage
Atraxa, Praetors Voice Arguably the best strategy for an Infect-based Commander deck is to play it around a completely different mechanic: Proliferate
EDHREC players sure are trying, slotting her into PW-focused Atraxa or Esika decks with cards like Carth the LionCarth the Lion, Commodore GuffCommodore Guff, and/or Oath of TeferiOath of Teferi, depending on the color identities you're working with
Death and Taxes can often be left with an empty hand, so the ability to restock will help you keep the cards flowing later in the game when a key removal spell on your opponent can be enough to turn the tide