Mechanize Rules
4/11/7
502.n1. Mechanize
502.n1a Mechanize is a static ability that functions while a spell is on the stack. It is a keyword that represents up to two abilities. The first provides spells an alternate cost to play the spell. If the spell is a permanent spell, the second ability sets a triggered ability when the spell enters play. Mechanize [cost] means “Instead of paying this spell’s mana cost you may pay [cost.] using mana from an artifact source.” and “When this spell resolves, if it comes into play, it becomes an artifact in addition to its other types.”
502.n1b Mechanize costs can only be mana costs because of the way they qualify the type of mana used to play them.
502.n1c Playing a card using a mechanize cost will not make it an artifact spell while it is on the stack. If it’s a permanent though, it will come into play as an artifact.