Tenderer of Beyond

Beyond: Add {c} to your mana pool. This
mana doesn't empty from your mana pool until
the beginning of your next end step.( At the
beginning of your upkeep, if this card is in exile, its
Beyond ability triggers.)
Weak
{t}: Exile a card from your hand, graveyard, or
the top of your library. Add X Gold mana to your
mana pool, where X is the number of creature
cards you own in exile. ( Gold mana can be used
as any color of mana.)