, Exile Planar Guide: Exile all creatures. At the beginning of the next end step, return those cards to the battlefield under their owners' control.

Haste
: Turn target face-down creature you control face up. At the beginning of the next end step, sacrifice it.

: The next time a source of your choice would deal damage to you this turn, that damage is dealt to Beacon of Destiny instead.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Tribal Forcemage is turned face up, creatures of the creature type of your choice get +2/+2 and gain trample until end of turn.

: Change Riptide Mangler's base power to target creature's power. (This effect lasts indefinitely.)

Sunstrike Legionnaire doesn't untap during your untap step.
Whenever another creature enters, untap Sunstrike Legionnaire.
: Tap target creature with mana value 3 or less.

Drinker of Sorrow can't block.
Whenever Drinker of Sorrow deals combat damage, sacrifice a permanent.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Unstable Hulk is turned face up, it gets +6/+6 and gains trample until end of turn. You skip your next turn.

Flash
When Caller of the Claw enters, create a 2/2 green Bear creature token for each nontoken creature put into your graveyard from the battlefield this turn.

Flying
, Tap two untapped Birds you control: Return target permanent to its owner's hand.

Flying
Whenever Hollow Specter deals combat damage to a player, you may pay . If you do, that player reveals X cards from their hand and you choose one of them. That player discards that card.

Noncreature spells cost more to cast.

Amplify 1 (As this creature enters, put a +1/+1 counter on it for each Zombie card you reveal in your hand.)
At the beginning of your upkeep, if Ghastly Remains is in your graveyard, you may pay . If you do, return Ghastly Remains to your hand.

Flying
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Dermoplasm is turned face up, you may put a creature card with a morph ability from your hand onto the battlefield face up. If you do, return Dermoplasm to its owner's hand.

Goblin Goon can't attack unless you control more creatures than defending player.
Goblin Goon can't block unless you control more creatures than attacking player.

Whenever a Sliver deals damage, its controller gains that much life.

Haste
Sacrifice a Goblin: Clickslither gets +2/+2 and gains trample until end of turn.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Defender of the Order is turned face up, creatures you control get +0/+2 until end of turn.

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.

At the beginning of each player's upkeep, that player mills X cards, where X is the number of cards in their hand.

All Slivers have ": Target Sliver creature gets +X/+0 until end of turn, where X is the number of Slivers on the battlefield."

, : Draw a card for each Wizard you control.

Flying
Creatures can't attack you unless their controller pays for each creature they control that's attacking you.

At the beginning of your upkeep, you draw X cards and you lose X life, where X is the number of Zombies you control.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Bane of the Living is turned face up, all creatures get -X/-X until end of turn.

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, Lavaborn Muse deals 3 damage to that player.

Untap all permanents you control during each other player's untap step.

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Chromeshell Crab is turned face up, you may exchange control of target creature you control and target creature an opponent controls.

Primal Whisperer gets +2/+2 for each face-down creature on the battlefield.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Flying
When Celestial Gatekeeper dies, exile it, then return up to two target Bird and/or Cleric permanent cards from your graveyard to the battlefield.

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

When Elvish Soultiller dies, choose a creature type. Shuffle all creature cards of that type from your graveyard into your library.

This spell can't be countered.
Vexing Beetle gets +3/+3 as long as no opponent controls a creature.

Amplify 2 (As this creature enters, put two +1/+1 counters on it for each Beast card you reveal in your hand.)
Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)