Core Set 2020

Blightbeetle | Creature | Insect | Protection from green (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything green.) Creatures your opponents control can't have +1/+1 counters put on them. | Jason Kang

Blood Burglar | Creature | Vampire Rogue | As long as it's your turn, Blood Burglar has lifelink. (Damage dealt by this creature also causes you to gain that much life.) | Cristi Balanescu

Sorcerer of the Fang | Creature | Human Wizard | {5}{B}, {T}: Sorcerer of the Fang deals 2 damage to target opponent or planeswalker. | Caio Monteiro

Yarok's Fenlurker | Creature | Horror | When Yarok's Fenlurker enters the battlefield, each opponent exiles a card from their hand. {2}{B}: Yarok's Fenlurker gets +1/+1 until end of turn. | Daarken

Corpse Knight | Creature | Zombie Knight | Whenever another creature enters the battlefield under your control, each opponent loses 1 life. | Karl Kopinski