Freebooter's Bounty

If you would draw a card while the number of
cards in your hand is equal to or greater than
your maximum hand size, instead look at the top
two cards of your library. Exile one of them face
down and put the other on the bottom of your
library. You may look at and play the exiled card
for as long as it remains exiled.
Whenever you sacrifice a Treasure for mana, add
one mana of any type that Treasure produced.