Where prices really spike is when cards appeal to both groups, with a card like Sheoldred, The Apocalypse a prime example being a major player in multiple competitive formats, and a favourite in Commander
Chart shows the price of Mawile V #TG17 at the end of each month going back as long as we have tracked the item.
The main cost driver is Zeus: the SP or Alternate Art version (OP11-106) is what inflates the budget, though the regular rare version is functionally identical and costs well under $5
The price of Yuna would continue its upward trend until June 12th, peaking at $27.38
(10/15/2006) Evermind has no mana cost, which means it can't normally be cast as a spell
This deck is still looking for the right build, but it holds a lot of promise