Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

, Sacrifice this enchantment: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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.)

Draw three cards, then put two cards from your hand on top of your library in any order.

Lifelink

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

When this creature enters, you may put a basic land card from your hand onto the battlefield tapped.

, , Sacrifice this creature: Destroy target enchantment.

Defender
Landfall — Whenever a land you control enters, this creature can attack this turn as though it didn't have defender.

When this creature dies, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

: This creature deals 1 damage to any target and 1 damage to you.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Target player sacrifices a creature of their choice.

Destroy target artifact or enchantment.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Flying
When you cast a creature spell, sacrifice this creature.

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

Changeling (This card is every creature type.)
Target creature gets +3/-3 and loses all creature types until end of turn.

: This creature deals 1 damage to any target.

When this creature enters, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

, : Add .

Destroy target nonblack creature.

Reveal cards from the top of your library until you reveal a nonland card, then put all cards revealed this way into your hand.

, : Add .

Counter target creature spell.

Counter target spell with mana value 4 or greater.

Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.

Whenever this creature deals combat damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.

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 this creature is turned face up, it deals 2 damage to any target.

, : Add .

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

When this creature enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Target player draws two cards and loses 2 life.