Atemsis, All-Seeing
{3}{U}{U}{U}
Legendary Creature -- Sphinx
4/5
Flying
{2}{U}, {T}: Draw two cards, then discard a card.
Whenever ~this~ deals damage to an opponent, you may reveal your hand. If cards with at least six different mana values are revealed this way, that player loses the game.
Hedron Alignment
{2}{U}
Enchantment
Hexproof
At the beginning of your upkeep, you may reveal your hand. If you do, you win the game if you own a card named Hedron Alignment in exile, in your hand, in your graveyard, and on the battlefield.
{1}{U}: Scry 1.
Liar's Pendulum
{1}
Artifact
{2}, {T}: Choose a card name. Target opponent guesses whether a card with that name is in your hand. You may reveal your hand. If you do and your opponent guessed wrong, draw a card.