Core Set 2020

Befuddle | Instant | | Target creature gets -4/-0 until end of turn. Draw a card. | Svetlin Velinov

Cloudkin Seer | Creature | Elemental Wizard | Flying When Cloudkin Seer enters the battlefield, draw a card. | Anastasia Ovchinnikova

Convolute | Instant | | Counter target spell unless its controller pays {4}. | Viktor Titov

Frost Lynx | Creature | Elemental Cat | When Frost Lynx enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step. | Izzy

Mu Yanling, Sky Dancer | Legendary Planeswalker | Yanling | +2: Until your next turn, up to one target creature gets -2/-0 and loses flying. −3: Create a 4/4 blue Elemental Bird creature token with flying. −8: You get an emblem with "Islands you control have '{T}: Draw a card.'" | G-host Lee

Portal of Sanctuary | Artifact | | {1}, {T}: Return target creature you control and each Aura attached to it to their owners' hands. Activate only during your turn. | Randy Vargas

Sage's Row Denizen | Creature | Vedalken Wizard | Whenever another blue creature enters the battlefield under your control, target player mills two cards. | Svetlin Velinov

Warden of Evos Isle | Creature | Bird Wizard | Flying Creature spells with flying you cast cost {1} less to cast. | Nils Hamm

Winged Words | Sorcery | | This spell costs {1} less to cast if you control a creature with flying. Draw two cards. | Chris Seaman

Empyrean Eagle | Creature | Bird Spirit | Flying Other creatures you control with flying get +1/+1. | Jason A. Engle

Tomebound Lich | Creature | Zombie Wizard | Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) Whenever Tomebound Lich enters the battlefield or deals combat damage to a player, draw a card, then discard a card. | Cristi Balanescu

Risen Reef | Creature | Elemental | Whenever Risen Reef or another Elemental enters the battlefield under your control, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand. | Johan Grenier