When Ceremonial Guard attacks or blocks, destroy it at end of combat.

Charging Rhino can't be blocked by more than one creature.

Destroy all enchantments.

Equipped creature gets +2/+0 and has shroud. (It can't be the target of spells or abilities.)
Whenever a Rogue creature enters the battlefield, you may attach Cloak and Dagger to it.
Equip

Clockwork Hydra enters the battlefield with four +1/+1 counters on it.
Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. If you do, Clockwork Hydra deals 1 damage to any target.
: Put a +1/+1 counter on Clockwork Hydra.

Flying
When Cloudchaser Kestrel enters the battlefield, destroy target enchantment.
: Target permanent becomes white until end of turn.

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Enchant creature
Enchanted creature can't attack or block unless its controller pays for each card in your hand.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Crater Hellion enters the battlefield, it deals 4 damage to each other creature.

Target player discards a card.
Haunt (When this spell card is put into a graveyard after resolving, exile it haunting target creature.)
When the creature Cry of Contrition haunts dies, target player discards a card.

At the beginning of your upkeep, destroy target nonland permanent with the lowest converted mana cost. (If two or more permanents are tied for lowest cost, target any one of them.)

Destroy each creature with converted mana cost 3 or less.

Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.)

Legendary creatures you control get +2/+2.

: Return Deadhead from your graveyard to the battlefield. Activate this ability only if an opponent isn't touching their hand (of cards).

As long as you have seven or more cards in hand, Deathmask Nezumi gets +2/+1 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Target player draws two cards.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Search your library for a multicolored card, reveal it, and put it into your hand. Then shuffle your library.

, Discard a card: Regenerate Dirty Wererat.
Threshold — As long as seven or more cards are in your graveyard, Dirty Wererat gets +2/+2 and can't block.