Al Ghul, Caller of Text

When Al Ghul, Caller of Text enters the battlefield, you
may cast a Vanilla card from your hand without paying
it's mana cost (Creatures without effects are Vanilla).
Vanilla creatures you control have Cascade. They are still Vanilla creatures.

{2},{t}: Add one mana of any color for each Vanilla creature you control. Vanilla creatures you control
gain +1/+1 for each other Vanilla creatures on the battlefield until the beginning of your next end step.