Discard 2 cards. Each other player may reveal a Bane card from his hand. If he doesn't, he gains a Curse.
Setup: Add an extra Kingdom card pile costing 2 Treasure or 3 Treasure to the Supply. Cards from that pile are Bane cards.
Choose one; you get the version in the parentheses: Each player gets +1 (+3) Cards; or each player gains a Silver (Gold); or each player may trash a card from his hand and gain a card costing exactly 1 treasure (2 treasure) more.