When this creature enters, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order.

: Target creature gets +1/+1 and gains flying, first strike, and trample until end of turn.

Flash
Creature cards you own that aren't on the battlefield have flash.
Each opponent can cast spells only any time they could cast a sorcery.

This creature gets -X/-X, where X is your life total.

Cast this spell only during an opponent's turn after their upkeep step.
Untap all lands you control.

(: Add .)

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.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Put a random creature from a random graveyard into play under your control. Call from the Grave deals to you an amount of damage equal to that creature's casting cost.

: Add .
, : This land becomes a copy of target land, except it has this ability.

Flying
Each player can't cast more than one spell each turn.
Nonbasic lands your opponents control enter tapped.

Banding (Just ask around until you find someone who knows.)
Creature spells you cast with banding cost less to cast.
Whenever two or more creatures you control attack in a band, each creature in that band gets +1/+1 until end of turn for each creature in that band.

As Catch of the Day enters the battlefield, choose one for each of the following.
Keyword → Vigilance; ward ; or islandwalk.
Whenever this creature attacks → Scry 2; goad target creature an opponent controls; or tap target creature an opponent controls.
Size → 6/2; 4/4; or 2/6.

, : Reveal cards from the top of your library until you reveal a land card. This artifact deals damage equal to the number of nonland cards revealed this way to any target. If the revealed land card was a Mountain, this artifact deals double that damage instead. Put the revealed cards on the bottom of your library in any order.

Haste
Whenever this creature attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand.

Boltfire deals 2 damage to any target.
Flashforward (You may cast this card from exile for its flashforward cost. Then put it on the bottom of your library.)

If this card is in your opening hand, you may begin the game with it on the battlefield.
You have hexproof. (You can't be the target of spells or abilities your opponents control.)

This spell costs less to cast if it targets a blue spell.
Counter target spell unless its controller pays .

Creature cards in graveyards and libraries can't enter the battlefield.
Players can't cast spells from graveyards or libraries.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

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.

Flying
Whenever this creature attacks or blocks, roll a six-sided die. This creature gets +X/+0 until end of turn, where X is the result minus 1.

Slumbering Waterways enters the battlefield tapped.
: Add or .
Flying, vigilance, trample

Indestructible
: Add .

, : 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.

Each player shuffles the cards from their hand into their library, then draws that many cards.

Counter target activated or triggered ability. (Mana abilities can't be targeted.)

Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.

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

First strike
When Gerrard dies, exile it and return to the battlefield all artifact and creature cards in your graveyard that were put there from the battlefield this turn.

Karn's power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

Flash
, Sacrifice this creature: Destroy target artifact or enchantment.

You control target player during that player's next turn. Exile Worst Fears. (You see all cards that player could see and make all decisions for them.)

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.)

+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."

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.)