Kaa, Wizards' Academy

Kaa, Wizards' Academy enters the battlefield
tapped unless you control a spellcaster (a Cleric,
a Wizard, a Warlock, a Shaman, or a Druid).
{t}: Add two mana of any one color. If that mana
is spent on a noncreature spell, that spell can't
be countered.
"You have to live and study on this tiny island for 25
years! No wonder why so many wizards go crazy."
—Ageyo, Former Court Mage of Marahava