You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast it
There's no noticeable movement in the MTGO online prices, a good sign that demand is being driven by Commander rather than constructed formats
It has enough vanilla gameplay that deckbuilding and playing the format is easy to understand, emphasizing fundamentals anyone can study and carry from set to set
Well-Equipped While Cloud, Midgar Mercenary is not quite a second copy of Stoneforge Mystic since he cant cheat in Kaldra Compleat, his double-trigger ability means that cheaper equipment options will often play better with Cloud than with Stoneforge Mystic
These are perennially worth $8-$12 despite being reprinted so many times
It seems like Wizards is always giving us new counters to play with these days, like flying and lifelink counters, or even stun counters on opposing creatures