Cup of Serenity

Creatures you control gains +2/+2 and lifelink .
If they have already lifelink , instead they have Lifelink 2 ( You gain twice life you'll gain with Lifelink. )
You draw an additional card each turn.
Pay 20 life : Exile all permanents, except your
lands.
{t} : Add {w}{u} to your mana pool.