Beyond short-term sales meant to make the most of the current market, periods of Pokmon popularity spikes such as this one strongly suggest that cards can (and often do) retain value
That effect normally isnt that impressive, mostly because you would go down a card for tempo alone, but because you have the Coven to play later, that isnt true in this case
Graded Population Report: V Guard Energy #215 Visualize the distrbution of grades in the chart
Carmen does cost five, though, so the rest of your deck should be filled with equal amounts of recursion (Sevinnes Reclamation et al), ramp (Ancient Tomb, Sword of the Animist) and evasive bodies that can also grow tall (Voldaren Bloodcaster, Liberator, Urzas Battlethopter, Serra Ascendant)
Wizardcycling (, Discard this card: Search your library for a Wizard card, reveal it, put it into your hand, then shuffle.) Creature - Wizard Vedalken Tutor (CTRL to add secondary) Untap Untap (CTRL to add secondary) Sideboard Archmage Ascension At the beginning of each end step, if you drew two or more cards this turn, you may put a quest counter on this enchantment
Her large ability, though, gives a potentially giant body, and getting ahead on body size is not something [casthaven]Rhys the Redeemed[/casthaven] could do