Kairos Fateweaver, Oracle

Flying, Hexproof
{x}: Reveal the top X cards of target player's library or reveal X random cards from target player's hand until end of turn.
{x}{t}: You may discard a card. Put a card revealed with Kairos this turn with mana
value X or less from an opponent's hand or library into their graveyard. If you discarded a card, reduce the mana cost of this ability by that card's converted mana cost.