Core Set 2021

Angelic Ascension | Instant | | Exile target creature or planeswalker. Its controller creates a 4/4 white Angel creature token with flying. | Volkan Baǵa

Basri's Solidarity | Sorcery | | Put a +1/+1 counter on each creature you control. | Paul Scott Canavan

Griffin Aerie | Enchantment | | At the beginning of your end step, if you gained 3 or more life this turn, create a 2/2 white Griffin creature token with flying. | Milivoj Ćeran

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

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