Core Set 2021

Barrin, Tolarian Archmage | Legendary Creature | Human Wizard | When Barrin, Tolarian Archmage enters the battlefield, return up to one other target creature or planeswalker to its owner's hand. At the beginning of your end step, if a permanent was put into your hand from the battlefield this turn, draw a card. | Ryan Pancoast

Cancel | Instant | | Counter target spell. | Mathias Kollros

Frost Breath | Instant | | Tap up to two target creatures. Those creatures don't untap during their controller's next untap step. | Mike Bierek

Library Larcenist | Creature | Merfolk Rogue | Whenever Library Larcenist attacks, draw a card. | Mila Pesic

Mistral Singer | Creature | Siren | Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) | Ryan Yee

Rousing Read | Enchantment | Aura | Enchant creature When Rousing Read enters the battlefield, draw two cards, then discard a card. Enchanted creature gets +1/+1 and has flying. | Campbell White

Teferi's Protege | Creature | Human Wizard | {1}{U}, {T}: Draw a card, then discard a card. | Bram Sels

Teferi's Tutelage | Enchantment | | When Teferi's Tutelage enters the battlefield, draw a card, then discard a card. Whenever you draw a card, target opponent mills two cards. (They put the top two cards of their library into their graveyard.) | Ilse Gort

Obsessive Stitcher | Creature | Human Wizard | {T}: Draw a card, then discard a card. {2}{U}{B}, {T}, Sacrifice Obsessive Stitcher: Return target creature card from your graveyard to the battlefield. | Joe Slucher

Lorescale Coatl | Creature | Snake | Whenever you draw a card, put a +1/+1 counter on Lorescale Coatl. | Greg Staples