The Ash Twin Project

If a creature or artifact you control would be put
into your graveyard, exile that card instead.
Whenever a player adds mana to their mana pool,
The Ash Twin Project gets a time counter for
each mana added.
At the beginning of your upkeep, if there are 22
or more time counters on The Ash Twin Project, sacrifice this card and return all cards exiled by
it to the battlefield.