The Royal Rook

Legendary Creature — Mutant Ninja Turtle

When Michelangelo enters, create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.") If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

Artifact

{T}: Add {U}. {2}{U}: Put an hour counter on this artifact. At the beginning of each upkeep, put an hour counter on this artifact. When the twelfth hour counter is put on this artifact, shuffle your hand and graveyard into your library, then draw seven cards. Exile this artifact.

Creature — Zombie Knight

Whenever a nontoken creature you control dies, this creature deals 1 damage to you and you draw a card.

Creature — Insect Druid

Landfall — Whenever a land you control enters, double the power of target creature you control until end of turn. Warp {2}{G} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

Instant

Target creature gets +2/+2 until end of turn. If you cast this spell during your main phase, that creature gets +4/+4 until end of turn instead.

Sorcery

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. Cycling {2} ({2}, Discard this card: Draw a card.)

Legendary Creature — Dragon Spirit

Flying, ward {2} Whenever another nontoken Dragon you control enters, create a token that's a copy of it, except the token isn't legendary.

Legendary Creature — Human Cleric

Mikaeus enters with X +1/+1 counters on it. {T}: Put a +1/+1 counter on Mikaeus. {T}, Remove a +1/+1 counter from Mikaeus: Put a +1/+1 counter on each other creature you control.

Legendary Creature — Mutant Ninja Turtle

Ward {2} You may look at the top card of your library any time. You may play lands and cast Mutant, Ninja, or Turtle spells from the top of your library. If you cast a creature spell this way, that creature enters with an additional +1/+1 counter on it.

Legendary Creature — Mutant Ninja Turtle

Whenever you put a counter on a creature you control, draw a card. This ability triggers only once each turn.

Legendary Land

{T}: Add {C}. {2}, {T}: Each player draws a card.

Artifact Creature — Construct

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Legendary Creature — Elf Ally

You may play an additional land on each of your turns. {R}{G}, Return a land you control to its owner's hand: Target creature gains trample until end of turn.

Legendary Land

Minas Tirith enters tapped unless you control a legendary creature. {T}: Add {W}. {1}{W}, {T}: Draw a card. Activate only if you attacked with two or more creatures this turn.

Instant — Trap

If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost. Exile any number of target spells.

Artifact

Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)

Sorcery

Each opponent reveals cards from the top of their library until they reveal X land cards, then puts all cards revealed this way into their graveyard. X can't be 0.

Artifact

Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.

Legendary Artifact

{4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for them.)

Creature — Horror

When this creature dies, each player discards their hand.

Artifact

Flash At the beginning of your upkeep, put an oil counter on this artifact. Instant and sorcery spells you cast cost {1} less to cast for each oil counter on this artifact.

Artifact

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

Legendary Land

Mines of Moria enters tapped unless you control a legendary creature. {T}: Add {R}. {3}{R}, {T}, Exile three cards from your graveyard: Create two Treasure tokens.

Creature — Kobold

Menace Pack tactics — Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, you may put a Dragon creature card from your hand onto the battlefield tapped and attacking.

Enchantment — Aura

Flash Enchant creature When enchanted creature dies, return that card to the battlefield under your control.

Legendary Creature — Gnome Wizard

Whenever you draw your second card each turn, create a 1/1 blue Illusion creature token with "This token gets +1/+0 for each other Illusion you control." Whenever an Illusion you control dies, you may put a permanent card with mana value less than or equal to that creature's power from your hand onto the battlefield.

Instant

Counter target spell with mana value 1 or less.

Legendary Planeswalker — Minsc

When Minsc & Boo enters and at the beginning of your upkeep, you may create Boo, a legendary 1/1 red Hamster creature token with trample and haste. +1: Put three +1/+1 counters on up to one target creature with trample or haste. −2: Sacrifice a creature. When you do, Minsc & Boo deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards. Minsc & Boo, Timeless Heroes can be your commander.

Legendary Creature — Human Cleric

Vigilance, lifelink Whenever you gain life, put a +1/+1 counter on each Cleric you control.

Artifact

{2}: This artifact becomes a copy of target artifact, creature, enchantment, or land until end of turn.

Enchantment

Creatures you control get +1/+1. Whenever you tap a land for mana, add one mana of any type that land produced.

Sorcery

Each opponent sacrifices a creature or enchantment of their choice.

Creature — Bat

Flying Whenever you create or sacrifice a token, each opponent loses 1 life.

Creature — Spider

Deathtouch Whenever this creature attacks, target legendary creature you control gains deathtouch until end of turn.

Land — Sphere

{T}: Add {C}. {T}: Add one mana of any color. Activate only if this land entered this turn. {3}, {T}: Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block." (Players dealt combat damage by it also get a poison counter.)

Legendary Creature — Cat Warrior

First strike Whenever Mirri attacks, each opponent can't block with more than one creature this combat. As long as Mirri is tapped, no more than one creature can attack you each combat.