Core Set 2021

Alpine Watchdog | Creature | Dog | Vigilance (Attacking doesn't cause this creature to tap.) | Forrest Imel

Concordia Pegasus | Creature | Pegasus | Flying | Chris Rahn

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

Daybreak Charger | Creature | Unicorn | When Daybreak Charger enters the battlefield, target creature gets +2/+0 until end of turn. | Forrest Imel

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

Seasoned Hallowblade | Creature | Human Warrior | Discard a card: Tap Seasoned Hallowblade. It gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Manuel Castañón

Tempered Veteran | Creature | Human Knight | {W}, {T}: Put a +1/+1 counter on target creature with a +1/+1 counter on it. {4}{W}{W}, {T}: Put a +1/+1 counter on target creature. | Izzy

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

Watcher of the Spheres | Creature | Bird Wizard | Flying Creature spells with flying you cast cost {1} less to cast. Whenever another creature with flying enters the battlefield under your control, Watcher of the Spheres gets +1/+1 until end of turn. | G-host Lee

Alpine Houndmaster | Creature | Human Warrior | When Alpine Houndmaster enters the battlefield, you may search your library for a card named Alpine Watchdog and/or a card named Igneous Cur, reveal them, put them into your hand, then shuffle. Whenever Alpine Houndmaster attacks, it gets +X/+0 until end of turn, where X is the number of other attacking creatures. | Mark Behm

Conclave Mentor | Creature | Centaur Cleric | If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead. When Conclave Mentor dies, you gain life equal to its power. | Raoul Vitale