Regret's Mask of Affliction

Regret's Mask of Affliction enters the battlefield
tapped with three "equip" counters attached to it.
It doesn't untap during upkeep.
{x}{ut}: (X can only be paid with life) Remove an
equip counter. Reveal X cards from the top of
your library, where X is the amount of life paid.
If any Regret cards are revealed this way, put
them into your hand, exile the rest. If no Regret
card is revealed, put the rest on the bottom of
your library, {t}. If all counters are removed and
no Regret cards were r