Tome of the Biomancer

When Tome of the Biomancer enters the battlefield, choose a creature type and a color.
Creatures you control of the chosen color get
+1/+1. Creatures you control of the chosen type
get +1/+1.
{t}: Add two mana of the chosen color. Whenever
this mana is spent on a creature of the chosen
type, draw a card. Those creatures gain haste
until end of turn.