The Card Yard

Enchantment — Aura

Enchant creature When this Aura enters, target creature an opponent controls can't block this turn. Enchanted creature gets +1/+1 and has haste.

Land

{T}: Add {C}. {T}, Sacrifice this land: Destroy target nonbasic land.

Creature — Frog Soldier

Whenever this creature attacks, if another creature entered the battlefield under your control this turn, this creature gains flying until end of turn.

Creature — Bat Cleric

Flying, vigilance Whenever you gain or lose life during your turn, this creature gets +1/+0 until end of turn.

Creature — Human Pirate

When this creature enters, if you control an artifact, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Sorcery

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) Destroy target artifact or enchantment. If the gift was promised, instead destroy two target artifacts and/or enchantments.

Creature — Human Bear Druid

{T}: Add {G}. Threshold — This creature gets +3/+3 as long as there are seven or more cards in your graveyard.

Sorcery

Each player discards their hand, then draws seven cards.

Creature — Mouse Citizen

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, you may discard a card. If you do, draw a card.

Creature — Rat Warlock

When this creature enters, mill three cards. When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the greatest mana value among cards in your graveyard.

Sorcery

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) Wildfire Howl deals 2 damage to each creature. If the gift was promised, instead Wildfire Howl deals 1 damage to any target and 2 damage to each creature.

Creature — Orc Shaman Sorcerer

The first spell you cast from exile each turn has cascade. (When you cast your first spell from exile, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Instant

Choose one — • Break Their Chains — Destroy target artifact. • Interrogate Them — Exile the top three cards of target opponent's library. Choose one of them. Until the end of your next turn, you may play that card, and you may spend mana as though it were mana of any color to cast it.

Legendary Creature — Horror

Hive Mind — Whenever a player mills one or more creature cards, you create a 1/1 black Horror creature token. {1}, {T}: Target player mills three cards. Choose a Background (You can have a Background as a second commander.)

Legendary Creature — Goblin Warrior

Whenever a land enters, Zo-Zu deals 2 damage to that land's controller.