box of mtg cards 6AGames Deluxe Booster - 1000 Assorted with Bonus 30 Rare Pack, 30 Foil Pack and 5 Mythic Pack! One card of any rarity is Traditional Foil AFIING MTG Deck Box 6

1 Augur of Bolas

FIC are Commander cards, which you can get in the Final Fantasy Commander precons or find in Collector boosters (but never in Play boosters)

Storm the Festival 5 Printings and their Prices Track Storm the Festival Prices Free collection tools for Magic: the Gathering

You should look to these first before deciding on what cards best complement your overall strategy

Fable of the Mirror-Breaker / Reflection of Kiki-Jiki Fable of the Mirror-Breaker is one of the best sagas in MTG, probably only out-valued by Urza's Saga

Speaking of foundational cards for your decks, you can also receive this double rainbow foil Sol Ring promo card while supplies last with the purchase of a Foundations Play Booster box or Collector Booster box