Generator Servant

Oracle Text

T, Sacrifice Generator Servant: Add CC. If that mana is spent on a creature spell, it gains haste until end of turn. (That creature can attack and T as soon as it comes under your control.)

Card Rulings

7/18/2014 If the mana is spent on two different creature spells, each of those spells (and resulting creatures) will gain haste until end of turn.
7/18/2014 If the mana is spent on additional or alternative costs of a creature spell, the creature will still gain haste.
7/18/2014 An instant or sorcery spell is not a creature spell, even if that spell creates creature tokens.