Alexzander, Devious Diplomat

Whenever you cast a human, if mana from a
treasure was spent to cast it, goad target creature
you don't control.
{3}{r/w}{w/b}: Humans you control gain haste, vigilance,
and lifelink until end of turn. If at least 3 mana
from treasures was spent to activate this ability,
those creatures also get +2/+2. Activate this
ability only during your turn and only once per
turn.
"It really is a sight to behold. All it takes is a little
gold and suddenly sparks start flying."