Chalice of Sanity

You play with your hand revealed.
{1}: Target player gains control of Chalice of
Sanity. Any player may pay {1} to counter this ability.
{b}{t}, Sacrifice Chalice of Sanity: Choose a card
name, then each player reveals their hand and
discards all cards with that name. Activate this
ability only if you're Chalice of Sanity's owner.