Kazko, Magus of Anguish

Spells you cast have Voodoo X (Each opponent loses X life or pays X mana in any combination), where X is the spell converted mana cost.
{u}{b}{g}: Regenerate a troll you control. That troll gains hexproof until the end of the turn.
"The one thing ya learn when hunting trolls is to avoid the old ones. They are that old for a reason."