
Bloodbriar | Creature | Plant Elemental | Whenever you sacrifice another permanent, put a +1/+1 counter on Bloodbriar. | Tomasz Jedruszek

Clear Shot | Instant | | Target creature you control gets +1/+1 until end of turn. It deals damage equal to its power to target creature you don't control. | Craig J Spearing

Eldritch Evolution | Sorcery | | As an additional cost to cast this spell, sacrifice a creature.
Search your library for a creature card with mana value X or less, where X is 2 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Exile Eldritch Evolution. | Jason Rainville

Emrakul's Evangel | Creature | Human Horror | {T}, Sacrifice Emrakul's Evangel and any number of other non-Eldrazi creatures: Create a 3/2 colorless Eldrazi Horror creature token for each creature sacrificed this way. | Jason Felix

Foul Emissary | Creature | Human Horror | When Foul Emissary enters the battlefield, look at the top four cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
When you sacrifice Foul Emissary while casting a spell with emerge, create a 3/2 colorless Eldrazi Horror creature token. | Dan Scott

Shrill Howler | Creature | Werewolf Horror | Creatures with power less than Shrill Howler's power can't block it.
{5}{G}: Transform Shrill Howler. | Matt Stewart

Spirit of the Hunt | Creature | Wolf Spirit | Flash
When Spirit of the Hunt enters the battlefield, each other creature you control that's a Wolf or a Werewolf gets +0/+3 until end of turn. | Bastien L. Deharme

Woodcutter's Grit | Instant | | Target creature you control gets +3/+3 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) | Anthony Palumbo

Woodland Patrol | Creature | Human Scout | Vigilance | James Ryman

Mournwillow | Creature | Plant Skeleton | Haste
Delirium — When Mournwillow enters the battlefield, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn. | Jeff Simpson