Zul, the Breathing Library

At the beginning of your upkeep, if you control 3 or more Grimoires, you gain 2 life. Otherwise, put
a charge counter on Zul, the Breathing Library.
{t}: Add {1} to your mana pool.
{ut}: Remove 3 charge counters from Zul. If you can't, sacrifice it.
"It's a place of knowledge, only for those who can handle its steady breathing." - Lunara