You can pay seven mana to meld him with The Mightstone and Weakstone to create Urza, Planeswalker, who has a whopping five different abilities you can use - and you can choose to activate two abilities per turn instead of just one
Previewed characters like Celes and Terra from Final Fantasy 6 have me excited to see how other characters from early games are depicted
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for the rest of this turn, all WIND Dragon monster you control will gain 300 ATK
You wont necessarily need four copies of each, though you might, especially for the bonus sheet lands that see a lot of play in Vintage and Legacy