Search your library for a basic land card, reveal it, put it into your hand, then shuffle this spell into its owner's library transformed. (For playtesting purposes, put it into its sleeve upside down.)

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Enchant creature
Enchanted creature has islandwalk and "Whenever this creature attacks, exile it and Meandered Towershell. Return it to the battlefield under your control tapped and attacking at the beginning of the declare attackers step on your next turn, then return Meandered Towershell to the battlefield under its owner's control attached to that creature."

Pyromancy 101 deals 1 damage to any target.
Teach (Then exile this spell taught to a creature you control. For as long as this card remains exiled, that creature has ": Copy the exiled card. You may cast the copy for its teach cost.")

Target player discards X cards at random.

Counter target instant or sorcery spell unless its controller pays .
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

This creature gets +2/+2 as long as there are three or more land cards in your graveyard.
, , Sacrifice a land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.

: Exile target land card from a graveyard. Add one mana of any color.
, : Exile target instant or sorcery card from a graveyard. Each opponent loses 2 life.
, : Exile target creature card from a graveyard. You gain 2 life.

Whenever an opponent pays a tax from a spell or permanent you control, create a number of Treasure tokens equal to the amount of mana they paid. (This happens each time a spell you control or an ability of a permanent you control causes an opponent to pay extra mana. Cards that can tax opponents include Mana Tithe, Esper Sentinel, and Ghostly Prison.)

: Another target creature you control gains protection from colorless or from the color of your choice until end of turn.

Grazing type (This creature enters the battlefield with five milk counters on it for each Forest and/or Plant you control.)

Whenever you search your library, scry 1.
Scryfall — Whenever you scry, put a +1/+1 counter on Search Elemental. It can't be blocked this turn.

At the beginning of your upkeep, you may look at the top three cards of your library, then put them back in any order.

Your opponents play with their hands revealed.
, Sacrifice Wisedrafter's Will: Draw a card.
, Sacrifice Wisedrafter's Will: Counter target spell.

Forbidden (This card can't be in your starting deck. Yes, you read that right. You need to figure out a way to get it into the game without it being in your deck.)
Target player draws three cards.

At the beginning of your end step, you may reveal your hand and put all land cards from it onto the battlefield. If you do, discard your hand.

Whenever you complete one of the following objectives, check it off. If all three are checked off, sacrifice Map to Lorthos's Temple. If you do, create a Lorthos, the Tidemaker token.
☐ Diving Gear — An artifact enters the battlefield under your control.
☐ Merfolk — A Merfolk enters the battlefield under your control.
☐ Ritual — You cast an instant or sorcery spell.

Exile target creature you control, then return it to the battlefield under its owner's control.

Buddy list (As this creature enters, if any of its creature types isn't on your buddy list, write one of them on your buddy list.)
Whenever another creature enters the battlefield under your control, put a +1/+1 counter on Champion of the Hareish if one of that creature's creature types is on your buddy list. Otherwise, write one of its creature types on your buddy list.

I — Exile up to one target Saga card from a graveyard. Copy its chapter I ability.
II — Exile up to one target Saga card from a graveyard. Copy its chapter II ability.
III — Exile up to one target Saga card from a graveyard. Copy its chapter III ability.

, : Flanking Licid loses this ability and becomes a creature enchantment that reads "Enchanted creature gains flanking" instead of a creature. Move Flanking Licid onto target creature. You may pay to end this effect.

All creatures are tokens. (They're considered tokens for spells and abilities. After a creature leaves the battlefield, it ceases to exist.)

Hosted creatures get +2/+0 and have haste.
Host (: Host target creature at this Realm. A Realm can host any number of creatures. Host only as a sorcery.)

Assist kicker (You and up to one other player can spend mana to pay this kicker cost.)
When All-Star Kicker enters the battlefield, your team may pass the ball. Then if All-Star Kicker was kicked, creatures your team controls get +1/+1 and gain haste until end of turn. (To pass the ball, one of the players on your team gives a permanent or card in hand to another player on your team.)

Each player may draw up to two cards. For each card less than two a player draws this way, that player gains 2 life.

Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)
At the beginning of the end step, sacrifice this enchantment.

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Activated abilities of artifacts can't be activated.

Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls.
Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.

This artifact enters with three wish counters on it.
, , Remove a wish counter from this artifact: Search your library for a card, put it into your hand, then shuffle. An opponent gains control of this artifact. Activate only during your turn.

When Questing Cosplayer enters the battlefield, create a Questing Role token and attach it to target creature. (If you control another Role on it, put that one into the graveyard. Enchanted creature has all the abilities of Questing Beast.)

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay ."

Subgoyf's power and toughness are each equal to the number of different subtypes other than creature types among cards in all graveyards and its toughness is equal to that number plus 1. (Subtypes include but are absolutely not limited to: Plains, Equipment, Aura, Arcane, Jace, Curse, Urza's, Ulamog's, etc.)

Menace
If you would flip a coin, you may instead roll a d20. 1−10 is tails and 11−20 is heads. (It counts as rolling a die, not flipping a coin.)
If you would roll a d20, you may instead flip a coin. Tails is 1 and heads is 20. (It counts as flipping a coin, not rolling a die.)

Changeling
Omnipresent Impostor has all card names.
As you search your library for one or more cards, you may choose Omnipresent Impostor as one of those cards. (For example, if you search for two land cards, you may find Omnipresent Impostor and a land card.)

Flash
If a nontoken creature would enter and it wasn't cast, exile it instead.