Mishra's Workshop

Oct 4, 2004 · This mana may be used on additional costs to cast the spell, such as Kicker.

Oct 4, 2004 · You can spend the mana on costs on the spell's text.

Oct 4, 2004 · This mana may not be used to pay costs imposed after the spell is initially cast.

Oct 4, 2004 · The mana can't be used to pay Echo costs.