Dark Omens: Mechanics

Hexproof: It can't be the target of spells or abilities your opponents control Used on 1 cards: Veil of Mists

Gravecast: You may play this card from your graveyard by paying \1 and exiling 2 cards from your graveyard Used on 6 cards: Ghul Mindshredder, Diseased Bat, Graveborn Legion, Gravestone Golem, Deathshock, Graveborn Summons

Resilient: If a source would deal combat damage to this creature, prevent \1 of that damage Used on 7 cards: Defiant Minotaur, Resilient Golem, Sendari Wastewalker, Rebel Squad, Leonar Fetish Crafter, Ironclad Dwarf, Champion of the First Pride

This is similar to Absorb from Lymph Sliver but for combat damage only. I just don't like the name, Absorb sounds more like it should be a mana ability not a damage one.

Shrivel: Damage is dealt to this creature in the form of -1/-1 counters. Used on 3 cards: Slagheap Gargoyle, Rebel Rabble, Unstable Illusion

from the first set in the block

Veil: ~ can't be the target of spells or abilities your opponents control Used on 0 cards:

Resilient: If a source would deal combat damage to it, prevent \1 of that damage Used on 2 cards: Stoneborn Clanlord, Hold Fast

In card text or details pages, write the mechanic's code name (playtest name) between square brackets, like "[Crittercast]", "[Bushido 1]" or "[Delay 4 {2}{R}{R}]". It will be expanded to the mechanic's name plus reminder text, such as "Suspend 4 – {2} {r} {r} . (Rather than cast this spell from your hand,...)"
To expand a mechanic's name but not its reminder text, include parentheses at the end of the square brackets: "[Crittercast()]", "[Delay 9 {R}()]".