Kosuzu Motoori

You may spend mana as though it were mana of
any type in order to cast spells.
Whenever an instant or sorcery card is put
into a player's graveyard from their hand or
library, exile it with a page counter on it.
You may play cards that are exiled with page
counters on them.
{t}: Each player draws a card, then discards a
card and mills a card.