Not properly packaging the cards
But at the same time, you dont really want multiple copies of Retriever Phoenix since each learn only recurs the first copy
Diamond Valley, a crucial lifegain engine that lets you sacrifice creatures for health, trades for about $1,077 raw, with graded 9 copies reaching $1,276
This is a pretty nice idea that resembles the ninjutsu of old and could open up a very intriguing design space revolving around bouncing and re-casting creatures
The other neat part of Pia Nalaar is that she gives all your Thopters haste, letting you attack the turn you make them
The OG duals were so powerful they served as the reason for subsequent land cycles adding restrictions such as coming into play tapped or dealing damage when tapped for colored mana