Discard a card: Olivia's Dragoon gains flying until end of turn.

Target creature gets +1/+0 until end of turn. When that creature dies this turn, create a 3/2 colorless Eldrazi Horror creature token.

, Discard a card: You gain 3 life.

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

When Primal Druid dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Enchant creature
Enchanted creature has haste and ", Discard a card: Draw a card."

Target opponent loses 3 life and puts a card from their hand on top of their library.

Prevent all damage that would be dealt this turn by non-Human sources.

Destroy target blocking creature. Creatures that were blocked by that creature this combat gain trample until end of turn.

Put target creature card from a graveyard onto the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.

As an additional cost to cast this spell, discard a card and sacrifice a creature.
Two target creatures each get -13/-13 until end of turn.

Escalate (Pay this cost for each mode chosen beyond the first.)
Choose one or more —
• Creatures target player controls gain trample until end of turn.
• Savage Alliance deals 2 damage to target creature.
• Savage Alliance deals 1 damage to each creature target opponent controls.

Delirium — This spell costs less to cast if there are four or more card types among cards in your graveyard.
Draw three cards.

Return up to one target instant card and up to one target sorcery card from your graveyard to your hand, then discard a card. Exile Shreds of Sanity.

Creatures with power less than Shrill Howler's power can't block it.
: Transform Shrill Howler.

, : Tap target non-Human creature.

Sinuous Predator can't be blocked by more than one creature.

, , Discard a card: Each player loses 2 life.

Equipped creature gets +3/+1 and must be blocked by an Eldrazi if able.
Equip

When Smoldering Werewolf enters the battlefield, it deals 1 damage to each of up to two target creatures.
: Transform Smoldering Werewolf.