Chana, The Green Queen

When Chana, The Green Queen enters the
battlefield gain 3 life.
Whenever a Knight enters the battlefield
under your control, gain {g} until end of turn.
{g}: Knights you control gain +1/+1 until end
of the turn.
{t}, Sacrifice a Spellbook: Gain {g} equal to the
card's converted mana cost.
"Life is full of opportunity and growth"
-Chana, The Green Queen