Destroy target creature with power 3 or greater. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

[+1]: Up to one target creature gets +2/+0 until end of turn.
[−2]: Sorin, Vampire Lord deals 4 damage to any target. You gain 4 life.
[−8]: Until end of turn, each Vampire you control gains ": Gain control of target creature."

Cohort — , Tap an untapped Ally you control: Look at the top four cards of your library. You may reveal an Equipment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Stonefury deals damage to target creature equal to the number of lands you control.

Menace
At the beginning of your upkeep, each player draws a card and loses 1 life.

Enchant nonland permanent
Enchanted permanent can't attack or block, and its activated abilities can't be activated.

Whenever Syr Faren, the Hengehammer attacks, another target attacking creature gets +X/+X until end of turn, where X is Syr Faren's power.

Each player sacrifices three creatures. You create three Food tokens. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

[+1]: Draw a card. At the beginning of the next end step, untap up to two lands.
[−3]: Put target nonland permanent into its owner's library third from the top.
[−8]: You get an emblem with "Whenever you draw a card, exile target permanent an opponent controls."

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant.
[+1]: Draw a card, then discard a card.
[−3]: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
[−10]: Take two extra turns after this one.

Each opponent can cast spells only any time they could cast a sorcery.
[+1]: Until your next turn, you may cast sorcery spells as though they had flash.
[−3]: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

[+2]: Create two 0/1 black Thrull creature tokens.
[+1]: You may sacrifice another creature or planeswalker. If you do, draw two cards, then draw another card if the sacrificed permanent was a commander.
[−10]: Gain control of all commanders. Put all commanders from the command zone onto the battlefield under your control.
Tevesh Szat, Doom of Fools can be your commander.
Partner

Enchant artifact
Enchanted artifact is a creature with base power and toughness 5/5 in addition to its other types.
When enchanted artifact is put into a graveyard, return that card to its owner's hand.

At the beginning of your end step, if you're the monarch, put a +1/+1 counter on Throne Warden.

Prevent all damage that would be dealt this turn by creatures your opponents control.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Whenever Truefire Captain is dealt damage, it deals that much damage to target player.

Devoid (This card has no color.)
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Whenever a creature enters the battlefield under your control, creatures you control get +1/+1 until end of turn.

Devoid (This card has no color.)
Vile Aggregate's power is equal to the number of colorless creatures you control.
Trample
Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)

[+1]: Put three +1/+1 counters on up to one target creature.
[−1]: Reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.
[−6]: Target creature gets +10/+10 and gains trample until end of turn.