Glory-Bound Initiate | Creature | Human Warrior | You may exert Glory-Bound Initiate as it attacks. When you do, it gets +1/+3 and gains lifelink until end of turn. (An exerted creature won't untap during your next untap step.) | David Palumbo
Harsh Mentor | Creature | Human Cleric | Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, Harsh Mentor deals 2 damage to that player. | Shreya Shetty
Channeler Initiate | Creature | Human Druid | When Channeler Initiate enters the battlefield, put three -1/-1 counters on target creature you control.
{T}, Remove a -1/-1 counter from Channeler Initiate: Add one mana of any color. | Yongjae Choi
Temmet, Vizier of Naktamun | Legendary Creature | Human Cleric | At the beginning of combat on your turn, target creature token you control gets +1/+1 until end of turn and can't be blocked this turn.
Embalm {3}{W}{U} ({3}{W}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Human Cleric with no mana cost. Embalm only as a sorcery.) | Anna Steinbauer
Hapatra, Vizier of Poisons | Legendary Creature | Human Cleric | Whenever Hapatra, Vizier of Poisons deals combat damage to a player, you may put a -1/-1 counter on target creature.
Whenever you put one or more -1/-1 counters on a creature, create a 1/1 green Snake creature token with deathtouch. | Tyler Jacobson