Debt to the Deathless | Sorcery | | Each opponent loses two times X life. You gain life equal to the life lost this way. | Seb McKinnon
Notion Thief | Creature | Human Rogue | Flash
If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card. | Clint Cearley
Reap Intellect | Sorcery | | Target opponent reveals their hand. You choose up to X nonland cards from it and exile them. For each card exiled this way, search that player's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles. | Steven Belledin
Carnage Gladiator | Creature | Skeleton Warrior | Whenever a creature blocks, that creature's controller loses 1 life.
{1}{B}{R}: Regenerate Carnage Gladiator. | Ryan Barger
Exava, Rakdos Blood Witch | Legendary Creature | Human Cleric | First strike, haste
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)
Each other creature you control with a +1/+1 counter on it has haste. | Aleksi Briclot
Rot Farm Skeleton | Creature | Plant Skeleton | Rot Farm Skeleton can't block.
{2}{B}{G}, Mill four cards: Return Rot Farm Skeleton from your graveyard to the battlefield. Activate only as a sorcery. | Maciej Kuciara