Core Set 2021

Containment Priest | Creature | Human Cleric | Flash If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead. | John Stanko

Pack Leader | Creature | Dog | Other Dogs you control get +1/+1. Whenever Pack Leader attacks, prevent all combat damage that would be dealt this turn to Dogs you control. | Rudy Siswanto

Runed Halo | Enchantment | | As Runed Halo enters the battlefield, choose a card name. You have protection from the chosen card name. (You can't be targeted, dealt damage, or enchanted by anything with that name.) | Steve Prescott

Ghostly Pilferer | Creature | Spirit Rogue | Whenever Ghostly Pilferer becomes untapped, you may pay {2}. If you do, draw a card. Whenever an opponent casts a spell from anywhere other than their hand, draw a card. Discard a card: Ghostly Pilferer can't be blocked this turn. | Craig J Spearing

See the Truth | Sorcery | | Look at the top three cards of your library. Put one of those cards into your hand and the rest on the bottom of your library in any order. If this spell was cast from anywhere other than your hand, put each of those cards into your hand instead. | Ekaterina Burmak

Shacklegeist | Creature | Spirit | Flying Shacklegeist can block only creatures with flying. Tap two untapped Spirits you control: Tap target creature you don't control. | Igor Kieryluk

Conspicuous Snoop | Creature | Goblin Rogue | Play with the top card of your library revealed. You may cast Goblin spells from the top of your library. As long as the top card of your library is a Goblin card, Conspicuous Snoop has all activated abilities of that card. | Zoltan Boros

Heroic Intervention | Instant | | Permanents you control gain hexproof and indestructible until end of turn. | James Ryman

Jolrael, Mwonvuli Recluse | Legendary Creature | Human Druid | Whenever you draw your second card each turn, create a 2/2 green Cat creature token. {4}{G}{G}: Until end of turn, creatures you control have base power and toughness X/X, where X is the number of cards in your hand. | Izzy

Scavenging Ooze | Creature | Ooze | {G}: Exile target card from a graveyard. If it was a creature card, put a +1/+1 counter on Scavenging Ooze and you gain 1 life. | Austin Hsu

Niambi, Esteemed Speaker | Legendary Creature | Human Cleric | Flash When Niambi, Esteemed Speaker enters the battlefield, you may return another target creature you control to its owner's hand. If you do, you gain life equal to that creature's mana value. {1}{W}{U}, {T}, Discard a legendary card: Draw two cards. | Eric Deschamps

Mazemind Tome | Artifact | | {T}, Put a page counter on Mazemind Tome: Scry 1. {2}, {T}, Put a page counter on Mazemind Tome: Draw a card. When there are four or more page counters on Mazemind Tome, exile it. If you do, you gain 4 life. | Randy Gallegos