
Equilibrium Adept | Creature | Dog Monk | When this creature enters, exile the top card of your library. Until the end of your next turn, you may play that card.
Flurry — Whenever you cast your second spell each turn, this creature gains double strike until end of turn. | Leroy Steinmann

War Effort | Enchantment | | Creatures you control get +1/+0.
Whenever you attack, create a 1/1 red Warrior creature token that's tapped and attacking. Sacrifice it at the beginning of the next end step. | Ioannis Fiore

Runescale Stormbrood | Creature | Dragon | Flying
Whenever you cast a noncreature spell or a Dragon spell, this creature gets +2/+0 until end of turn. | Loïc Canavaggia

Effortless Master | Creature | Orc Monk | Vigilance
Menace (This creature can't be blocked except by two or more creatures.)
This creature enters with two +1/+1 counters on it if you've cast two or more spells this turn. | Lie Setiawan

Jeskai Brushmaster | Creature | Orc Monk | Double strike
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) | Nino Vecia

Bone-Cairn Butcher | Creature | Demon | Mobilize 2 (Whenever this creature attacks, create two tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.)
Attacking tokens you control have deathtouch. | David Palumbo