There are a total of 16 Amethyst cards and 44 Sapphire cards
Since these characters feature in a game, not a story, what happens to them varies from play session to play session
Most of these can be cost-reduced, and these mostly feel like the standard dozen or so spells you see in Izzet decks: An Offer You Can't Refuse Cyclonic Rift Deflecting Swat Fierce Guardianship Flusterstorm Force of Negation Force of Will Lightning Bolt Mental Misstep Pact of Negation Pongify Snap Swan Song Ramp In addition to your lands and mana rocks, youve got stuff that makes you mana and/or Treasures: Dockside Extortionist, Simian Spirit Guide, Rite of Flame, and Strike It Rich
Five Rare Bonus Bombs As mentioned, on top of the three main Final Fantasy Bonus Cards, there are five rare randomly available options
It represents a cost that can be paid by one mana that was produced by a snow source
However, with Rhystic Study on your side, you should have no trouble drawing into an answer for whatever new threats are sent your way