Unknown Event

Ulgrotha Charm

Ulgrotha Charm {2}{U}

Instant
Choose one —
• Merchant Scroll (Search for a blue instant.)
• Memory Lapse (Counter a spell and put it on top of its owner's library.)
• Forget (Target player discards 2, then draws that many.)
Xerex Squire

Xerex Squire {2}{U}

Creature - Human Knight
Whenever Xerex Squire attacks, calculate the hypotenuse of another creature you control. Xerex Squire's power and toughness become equal to that number, rounded up, until end of turn. (To calculate a hypotenuse, let A be that creature's power and B be that creature's toughness. Then C = √(a² + b²). C is the hypotenuse. Or just look up a calculator online.)
1/1
Farseeing Flockmate

Farseeing Flockmate {3}{U}

Creature - Bird Wizard
Flying
Flying backup (When this creature enters the battlefield, put a flying counter on target creature. If that's another creature, it also gains the following ability until end of turn.)
Whenever this creature deals combat damage to a player, planeswalker, or battle, surveil 1.
3/2
Adventurer Beguiler

Adventurer Beguiler {4}{U}

Creature - Human Warlock
When Adventurer Beguiler enters the battlefield, choose target creature card on an adventure. That card is now on an adventure for you. (You can cast it from exile and your opponent can't.)
4/5
Clear, the Mind

Clear, the Mind {2}{U}

Sorcery
Spell commander (This card can be your commander. In Limited, it can partner like other monocolored legends.)
Target player shuffles their graveyard into their library.
Draw a card.
Elemental, My Dear

Elemental, My Dear {X}{U}{U}

Sorcery
Investigate X times, then create an 0/0 Blue Elemental creature token. Put +1/+1 counters on that token equal to the number of Clues you control.
Takesies

Takesies {2}{U}

Instant
Move up to one counter from each permanent onto target permanent.
Fuse (You may cast one or both halves of this card from your hand.)
Card has other part: Backsies
Backsies

Backsies {1}{B}

Instant
Until end of turn, treat all counters as -1/-1 counters.
Fuse (You may cast one or both halves of this card from your hand.)
Card has other part: Takesies
Tax Draw

Tax Draw {3}{U}

Instant
Draw cards equal to your highest commander tax among your commanders. (For example, if you've cast your one commander from your command zone twice, draw four cards.)
Tax Sweeper

Tax Sweeper {2}{B}

Sorcery
Creatures get -X/-X until end of turn, where X is your highest commander tax among your commanders. (For example, if you've cast your one commander from your command zone twice, creatures get -4/-4 until end of turn.)
Good Knight

Good Knight {W}{W}

Creature - Cat Knight
First Strike
You can't cast Good Knight if you're on the Phyrexian team.
If Good Knight is on the battlefield at the end of the game, score an additional point for the Mirran team.
2/2
Gather, the Townsfolk

Gather, the Townsfolk {1}{W}

Sorcery
Spell commander (This card can be your commander. In Limited, it can partner like other monocolored legends.)
Create two 1/1 white Human creature tokens.
Fateful hour — If you have 5 or less life, create five of those tokens instead.
Hero's Uncle

Hero's Uncle {1}{W}

Creature - Human
When Hero's Uncle dies, you may search your library for a legendary team-up creature, reveal it, put it into your hand, then shuffle. (A legendary team-up creature is two or more legendary characters teamed up on the same legendary creature card, such as Drana and Linvala.)
2/2
Identify the Culprit

Identify the Culprit {W}

Sorcery
Secretly chose a creature target opponent controls. Then, that player guesses which creature it is. Reveal the chosen creature. If they guessed incorrectly, exile the creature you chose. Otherwise, return Identify the Culprit to its owner's hand and you can't cast it again this turn.
Tax Hounds

Tax Hounds {2}{W}

Sorcery
Create X 1/1 white Dog creature tokens, where X is your highest commander tax among your commanders. (For example, if you've cast your one commander from your command zone twice, create four tokens.)
Rosewater's Nemesis

Rosewater's Nemesis {3}{W}{W}

Creature - Monkey Cleric
Vigilance, protection from Phyrexians
Poison Tolerance +3 (It takes three additional poison counters for you to lose the game to poison.)
4/6
Windy City Elemental

Windy City Elemental {3}{W}{W}

Creature - Elemental
Flying
Ascend MagicCon Chicago (If you attended MagicCon Chicago and control ten or more permanents, you get the windy city's blessing for the rest of the game.)
Whenever Windy City Elemental attacks, if you have the windy city's blessing, put a +1/+1 counter on each creature you control with flying.
4/4
Echoing Echo

Echoing Echo {W}

Sorcery
Target creature and all creatures that share a name with that creature gain echo {3} until the end of your next turn. (At the beginning of the upkeep of each of those creature's controllers, if that creature came under its owner's control since the beginning of their last upkeep, they sacrifice it unless they pay its echo cost.)
Theros Charm

Theros Charm {3}{W}

Instant
Choose one —
• Idyllic Tutor (Search for an enchantment.)
• Revoke Existence (Exile an artifact or enchantment.)
• Reprisal (Destroy a creature with power 4 or greater. It can't be regenerated.)
Trash Panda

Trash Panda {4}{B}{G}

Creature - Raccoon Bear
When Trash Panda enters the battlefield, exile target opponent's graveyard. Create a Food token for each creature card exiled this way.
When Trash Panda dies, put it into target opponent's graveyard.
Opponent dredge 4 (If an opponent would draw a card, instead you may have them mill exactly four cards and put this card into their hand from their graveyard.)
5/5
The Pleasant Taxer

The Pleasant Taxer {1}{W}

Legendary Creature - Human Wizard
As The Pleasant Taxer enters the battlefield, choose casting creature spells, casting noncreature spells, searching libraries, drawing a card beyond the first each turn, or activating abilities other than mana abilities.
Doing the chosen action costs players {1} more.
2/2
Potatoes

Potatoes {0}

Artifact - Food
{2}, {T}, Sacrifice Potatoes: Choose one —
• Boil — Potatoes deals 1 damage to any target.
• Mash — Create two Food tokens.
• Stew — Gain 3 life. Draw a card.
Simic Slaw

Simic Slaw {2}

Artifact - Food Clue
Whenever one or more creatures die, put a charge counter on Simic Slaw.
{2}, Sacrifice Simic Slaw: Draw X cards and gain X life, where X is the number of charge counters on Simic Slaw.
Halving Season

Halving Season {4}{B}

Enchantment
If an opponent would create one or more tokens, they create half that many of each of those kinds of tokens instead, rounded down.
If an opponent would put one or more counters on a permanent or player, they put half that many of each of those kinds of counters on that permanent or player instead, rounded down.