
Avacyn, Guardian Angel | Legendary Creature | Angel | Flying, vigilance
{1}{W}: Prevent all damage that would be dealt to another target creature this turn by sources of the color of your choice.
{5}{W}{W}: Prevent all damage that would be dealt to target player or planeswalker this turn by sources of the color of your choice. | Winona Nelson

Master of Predicaments | Creature | Sphinx | Flying
Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost. | Matt Stewart

Mercurial Pretender | Creature | Shapeshifter | You may have Mercurial Pretender enter the battlefield as a copy of a creature you control, except it has "{2}{U}{U}: Return this creature to its owner's hand." | Izzy

Indulgent Tormentor | Creature | Demon | Flying
At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life. | Wesley Burt

Hoarding Dragon | Creature | Dragon | Flying
When Hoarding Dragon enters the battlefield, you may search your library for an artifact card, exile it, then shuffle.
When Hoarding Dragon dies, you may put the exiled card into its owner's hand. | Matt Cavotta