Ogura, Boundless

Whenever you cast an instant or sorcery spell, put
a charge counter on Ogura, Boundless.
At the beginning of your upkeep, you may cast an
instant or sorcery card from your hand with
converted mana cost less than or equal to the
number of charge counters on Ogura, Boundless
without paying its mana cost.
{w}{u}{b}: Draw a card, then shuffle a card from
your hand into your library.