Old mana bases got rather better
Think of it like eBay, but built specifically for cards
Cats are a pretty low-to-the-ground creature type, so the best way to take advantage of Arahbo, the First Fang in the command zone is to play a bunch of low-cost creatures, like Helpful Hunter and Lion Sash, to quickly build a board
Besides only hitting your own graveyard, this Boros sorcery will grant haste to all those recently returned artifact creatures youre running, for just 1 more mana than Open the Vaults
And dont forget: Its still +3/+3 and evasion on any other creature you slap it on, letting you squeeze that last bit of damage by in the late-game when you have enough mana to equip it to your non-commander creatures
Eggs are combo decks that cycle zero- to one-mana artifacts (such as Lotus PetalLotus Petal or Mishra's BaubleMishra's Bauble) for incremental value, and close out game with cards like Reckless FireweaverReckless Fireweaver or Disciple of the VaultDisciple of the Vault
