Glissa Sunseeker | Magic: The Gathering
Formats Glissa Sunseeker is Legal in
Official Oracle Text for Glissa Sunseeker
: Destroy target artifact if its converted mana cost is equal to the amount of mana in your mana pool.
Official Rulings for Glissa Sunseeker
12/1/2004 : The mana has to be in your mana pool before the ability resolves. The ability doesn't allow you to activate mana abilities while it's resolving.