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)
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Urzas Incubator If you land an Ugin's Labyrinth correctly, you could drop an Oblivion Sower on turn 3 with Urza's Incubator on turn 2
Youre restricted to power 2 or less, but even then, we can be creative
I wouldnt be happy with this unless it were making four or more mana every turn, since the initial 4-mana 2/4 isnt the best thing to have on the battlefield