At the beginning of your upkeep, choose target opponent. This turn, that player can't cast spells or activate abilities and plays with their hand revealed. You may play lands and cast spells from that player's hand this turn.

Face-down creatures get +1/+1.
: Turn target face-down creature face up.

Flying
When this creature enters, you may pay . When you do, it deals 3 damage to any target.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever a source deals damage to this creature, that source's controller gets a poison counter.

When this creature enters, exile target creature card from a graveyard. You gain life equal to that card's toughness.

When this artifact enters, it deals 2 damage to any target.
: Add one mana of any color.

As this artifact enters, choose a creature type.
, : You may put a creature card of the chosen type from your hand onto the battlefield.

Flying
Sacrifice this creature: Counter target spell unless its controller pays .

Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on this creature.

Choose one —
• Draw cards equal to the greatest power among non-Human creatures you control.
• Non-Human creatures you control get +3/+3 until end of turn.

Target creature gets -5/-5 until end of turn.

As Throne of Eldraine enters, choose a color.
: Add four mana of the chosen color. Spend this mana only to cast monocolored spells of that color.
, : Draw two cards. Spend only mana of the chosen color to activate this ability.

When this creature enters, double the number of each kind of counter on any number of target permanents.

Return target creature card from your graveyard to the battlefield.

You can't cast more than one spell each turn.
You may play lands and cast spells from your graveyard.
If a card would be put into your graveyard from anywhere, exile it instead.

Return target creature card from your graveyard to the battlefield.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Constellation — Whenever this creature or another enchantment you control enters, target creature gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

( can be paid with either or 2 life.)
Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures.

When this creature enters, destroy target artifact or enchantment an opponent controls.

When this creature enters, you become the monarch.
This creature can block an additional creature each combat as long as you're the monarch.

Protection from red
Tap five untapped Goblins you control: This creature deals 10 damage to each creature and each player.

Flying
Whenever this creature enters or deals combat damage to a player, exile up to one target nonland permanent. For as long as that card remains exiled, its owner may cast it.
Whenever another player casts a spell from anywhere other than their hand, draw a card.

Prophetic Bolt deals 4 damage to any target. Look at the top four cards of your library. Put one of those cards into your hand and the rest on the bottom of your library in any order.

When this creature enters, you may return target artifact to its owner's hand.

Landfall — Whenever a land you control enters, this creature gets +2/+2 until end of turn.

Flash (You may cast this spell any time you could cast an instant.)
Flying

Trample
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Destroy target land. Its controller loses 2 life.

Alchemist's Greeting deals 4 damage to target creature.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

First strike
: Add an amount of equal to the greatest power among creatures you control that entered this turn.
Partner (You can have two commanders if both have partner.)

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value.
: Target creature token can't be blocked this turn.

Target creature you control deals damage equal to its power to each other creature and each opponent.

After the second main phase this turn, there's an additional combat phase followed by an additional main phase. At the beginning of that combat, untap all creatures that attacked this turn.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Changeling (This card is every creature type.)
Champion a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)

Flying
When this creature dies, target opponent puts a card from their hand on top of their library.