Foundations

Battlesong Berserker | Creature | Human Berserker | Whenever you attack, target creature you control gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures.) | Mirko Failoni

Sower of Chaos | Creature | Devil | {2}{R}: Target creature can't block this turn. | Brian Valeza

Strongbox Raider | Creature | Orc Pirate | Raid — When this creature enters, if you attacked this turn, exile the top two cards of your library. Choose one of them. Until the end of your next turn, you may play that card. | Craig J Spearing

Hidetsugu's Second Rite | Instant | | If target player has exactly 10 life, Hidetsugu's Second Rite deals 10 damage to that player. | Ben Hill

Involuntary Employment | Sorcery | | Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Milivoj Ćeran

Krenko, Mob Boss | Legendary Creature | Goblin Warrior | {T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control. | Lie Setiawan

Spitfire Lagac | Creature | Lizard | Landfall — Whenever a land you control enters, Spitfire Lagac deals 1 damage to each opponent. | Antonio José Manzanedo

Heroic Reinforcements | Sorcery | | Create two 1/1 white Soldier creature tokens. Until end of turn, creatures you control get +1/+1 and gain haste. (They can attack and {T} this turn.) | Scott Murphy

Ashroot Animist | Creature | Lizard Druid | Trample When this creature attacks, another target creature you control gains trample and gets +X/+X until end of turn, where X is this creature's power. | Caio Monteiro