These characters can gain Lore while attacking, which removes the need to decide between attacking or questing
Now that much of the whinging is out of the way, we can go a little quicker in discussing individual cards
To challenge, exert one of your characters by turning them sideways
The rarity symbol is holographic on the bottom of the card, and omits a shine
Looking at the most valuable cards in the Final Fantasy x Magic: The Gathering set as of the time of writing shows that the highest-value cards are all either foil or surge foil printings, which seems to have contributed to the hyper-inflated cost of both individual Collector Booster packs (now going for $100 on the secondary market) and a Collector Booster Display Box (fetching up to $1,200)
This collection, in particular, features a multitude of awesome EDH support cards