Haste
If a spell you control would deal damage to an opponent, prevent that damage. Create a 3/1 red Elemental Shaman creature token with haste for each 1 damage prevented this way.
When Hostility is put into a graveyard from anywhere, shuffle it into its owner's library.

4.2 /10

$0.20

Teferi, Temporal Pilgrim

Legendary Planeswalker — Teferi

Whenever you draw a card, put a loyalty counter on Teferi, Temporal Pilgrim.
0: Draw a card.
?2: Create a 2/2 blue Spirit creature token with vigilance and "Whenever you draw a card, put a +1/+1 counter on this creature."
?12: Target opponent chooses a permanent they control and returns it to its owner's hand. Then they shuffle each nonland permanent they control into its owner's library.

9.3 /10

$5.30

Invasion of New Phyrexia // Teferi Akosa of Zhalfir

Battle — Siege // Legendary Planeswalker — Teferi

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When Invasion of New Phyrexia enters the battlefield, create X 2/2 white and blue Knight creature tokens with vigilance.

Teferi Akosa of Zhalfir

+1: Draw two cards. Then discard two cards unless you discard a creature card.
?2: You get an emblem with "Knights you control get +1/+0 and have ward ."
?3: Tap any number of untapped creatures you control. When you do, shuffle target nonland permanent an opponent controls with mana value X or less into its owner's library, where X is the number of creatures tapped this way.

7.2 /10

$1.65

Worldspine Wurm

Creature — Wurm (15/15)

Trample
When Worldspine Wurm dies, create three 5/5 green Wurm creature tokens with trample.
When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.

8.7 /10

$6.49

Vigor

Creature — Elemental Incarnation (6/6)

Trample
If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.
When Vigor is put into a graveyard from anywhere, shuffle it into its owner's library.

9.6 /10

~$11

White Sun's Zenith

Instant

Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.

9.1 /10

$0.45

Green Sun's Zenith

Sorcery

Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.

9.9 /10

$9.43

Antique Collector

Creature — Human Rogue (2/2)

Antique Collector can't be blocked by creatures with power 2 or less.
When Antique Collector enters the battlefield, creatures you control perpetually gain "When this creature dies, you may shuffle it into its owner's library if it's in your graveyard. If you do, investigate."

10 /10

Beacon of Unrest

Sorcery

Put target artifact or creature card from a graveyard onto the battlefield under your control. Shuffle Beacon of Unrest into its owner's library.

9.1 /10

$0.30

Dramatic Accusation

Enchantment — Aura

Enchant creature
When Dramatic Accusation enters the battlefield, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
: Shuffle enchanted creature into its owner's library.

2.7 /10

$0.02

Guile

Creature — Elemental Incarnation (6/6)

Guile can't be blocked except by three or more creatures.
If a spell or ability you control would counter a spell, instead exile that spell and you may play that card without paying its mana cost.
When Guile is put into a graveyard from anywhere, shuffle it into its owner's library.

6.9 /10

$0.67

Rishadan Pawnshop

Artifact

, : Shuffle target nontoken permanent you control into its owner's library.

2.8 /10

$0.58

Black Sun's Zenith

Sorcery

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

9.2 /10

$0.25

Dread

Creature — Elemental Incarnation (6/6)

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Whenever a creature deals damage to you, destroy it.
When Dread is put into a graveyard from anywhere, shuffle it into its owner's library.

6.4 /10

$4.74

Howl of the Night Pack

Sorcery

Create a 2/2 green Wolf creature token for each Forest you control.

7.2 /10

$0.27

Last Stand

Sorcery

Target opponent loses 2 life for each Swamp you control. Last Stand deals damage to target creature equal to the number of Mountains you control. Create a 1/1 green Saproling creature token for each Forest you control. You gain 2 life for each Plains you control. Draw a card for each Island you control, then discard that many cards.

4.5 /10

$0.35

Red Sun's Zenith

Sorcery

Red Sun's Zenith deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead. Shuffle Red Sun's Zenith into its owner's library.

7.1 /10

$0.47

Vilespawn Spider

Creature — Spider (2/3)

Reach
At the beginning of your upkeep, mill a card. (Put the top card of your library into your graveyard.)
, , Sacrifice Vilespawn Spider: Create a 1/1 green Insect creature token for each creature card in your graveyard. Activate only as a sorcery.

5.9 /10

$0.08