, Pay 1 life: Add one mana of any type that a land you control could produce.

, : You may put a land card from your hand onto the battlefield tapped.

, , Sacrifice Horizon of Progress: Draw a card.

Menace

When Horned Stoneseeker enters, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

When Horned Stoneseeker leaves the battlefield, sacrifice a Powerstone.

If you control a Swamp, destroy target nonblack creature.

Splice onto Arcane—Exile four cards from your graveyard. (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

: Add .

, , Sacrifice a creature: Put a soul counter on Hostile Hostel. Then if there are three or more soul counters on it, remove those counters, transform it, then untap it. Activate only as a sorcery.

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy.

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Howltooth Hollow enters tapped.

: Add .

, : You may play the exiled card without paying its mana cost if each player has no cards in hand.

You may have Hulking Metamorph enter as a copy of an artifact or creature you control, except it's an artifact creature in addition to its other types, and its power and toughness are equal to Hulking Metamorph's power and toughness.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

3/3

Flash

If an opponent would draw a card except the first one they draw in each of their draw steps, instead you create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Vigilance

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

As long as Hundred-Handed One is monstrous, it has reach and can block an additional ninety-nine creatures each combat.

(Gain the next level as a sorcery to add its ability.)

When Hunter's Talent enters, target creature you control deals damage equal to its power to target creature you don't control.

: Level 2

//Level_2//

Whenever you attack, target attacking creature gets +1/+0 and gains trample until end of turn.

: Level 3

//Level_3//

At the beginning of your end step, if you control a creature with power 4 or greater, draw a card.

Kicker (You may pay an additional as you cast this spell.)

Hurloon Battle Hymn deals 4 damage to target creature or planeswalker. If this spell was kicked, you gain 4 life.

As Hydroelectric Laboratory enters, you may pay 3 life. If you don't, it enters tapped.

: Add .

Icatian Store enters tapped.

You may choose not to untap Icatian Store during your untap step.

At the beginning of your upkeep, if Icatian Store is tapped, put a storage counter on it.

, Remove any number of storage counters from Icatian Store: Add for each storage counter removed this way.

(: Add or .)

Ice Tunnel enters tapped.

If you would roll one or more planar dice, instead roll that many planar dice plus one and ignore one.

: Add .

Planeswalkers you control have "0: Proliferate" and "–12: Take an extra turn after this one."

Whenever you cast a noncreature spell, choose a counter on target permanent. Put an additional counter of that kind on that permanent.

(: Add or .)

Idyllic Beachfront enters tapped.

: Add .

, Pay 1 life: Add .

, , Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

Kicker and/or (You may pay an additional and/or as you cast this spell.)

Illuminate deals X damage to target creature. If this spell was kicked with its kicker, it deals X damage to that creature's controller. If this spell was kicked with its kicker, you draw X cards.

Cast this spell only during the declare blockers step on an opponent's turn.

Remove all attacking creatures from combat and untap them. After this phase, there is an additional combat phase. Each of those creatures attacks that combat if able. They can't attack you or planeswalkers you control that combat.

Immersturm Skullcairn enters tapped.

: Add .

, , Sacrifice Immersturm Skullcairn: It deals 3 damage to target player. That player discards a card. Activate only as a sorcery.

Enchant creature, land, or planeswalker

Enchanted permanent is a colorless land with ": Add " and loses all other card types and abilities.

Improvised Weaponry deals 2 damage to any target. Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

When Impulsive Pilferer dies, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Kicker (You may pay an additional as you cast this spell.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. If this spell was kicked, sacrifice that creature at the beginning of the next end step.

: Add one mana of any type that a land you control could produce. If Incubation Druid has a +1/+1 counter on it, add three mana of that type instead.

: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)

: Add , , or .

Cycling (, Discard this card: Draw a card.)

Flying

: Target permanent becomes blue in addition to its other colors until end of turn.

As an additional cost to cast this spell, return X Swamps you control to their owner's hand.

Infernal Harvest deals X damage divided as you choose among any number of target creatures.

As an additional cost to cast this spell, sacrifice a creature.

Add .

Creatures you control have vigilance and ": Add one mana of any color. Spend this mana only to cast a creature spell."

Whenever you cast a creature spell, if three or more mana from creatures was spent to cast it, draw a card.

: Add . If this ability has been activated four or more times this turn, sacrifice Initiates of the Ebon Hand at the beginning of the next end step.

Enchant creature

Enchanted creature gets +2/+2, has flying, and is a Demon in addition to its other types.

When Inner Demon enters, all non-Demon creatures get -2/-2 until end of turn.

(Gain the next level as a sorcery to add its ability.)

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control.

: Level 2

//Level_2//

Permanents you control with counters on them have ward .

: Level 3

//Level_3//

If you would put one or more counters on a permanent or player, put twice that many of each of those kinds of counters on that permanent or player instead.

Spree (Choose one or more additional costs.)

+ — Search your library for a card, then shuffle and put that card on top.

+ — Target player draws three cards and loses 3 life.

Creature tokens you control have ": Add one mana of any color."

Whenever one or more creature cards leave your graveyard, create a 0/1 green Plant creature token, then put a +1/+1 counter on each Plant you control.

Inspiring Vantage enters tapped unless you control two or fewer other lands.

: Add or .

Whenever you cast a planeswalker spell, you gain 1 life.

: Add .

, : Add two mana of different colors. Spend this mana only to cast planeswalker spells.

You may look at the top card of your library any time.

You may cast spells from the top of your library by sacrificing a nonland permanent in addition to paying their other costs.

: Add one mana of any color.

: Exile target card from a graveyard.

You may cast Dinosaur creature spells from among cards you own exiled with Intrepid Paleontologist. If you cast a spell this way, that creature enters with a finality counter on it. (If a creature with a finality counter on it would die, exile it instead.)

Reach

: Add .

: Add two mana of any one color. Spend this mana only to cast Mount or Vehicle spells.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Scry 2.

II — Draw a card. Then you may reveal a Giant card from your hand. When you do, Invasion of the Giants deals 2 damage to target opponent or planeswalker.

III — The next Giant spell you cast this turn costs less to cast.

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life.

: Add .

, , Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

The next time a source of your choice would deal damage to you this turn, prevent that damage.

: Add .

, Pay 1 life: Add .

, , Sacrifice a Desert: Target player mills four cards. (They put the top four cards of their library into their graveyard.)

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

Landfall — Whenever a land you control enters, this creature deals 1 damage to target opponent.

(: Add or .)

Irrigated Farmland enters tapped.

Cycling (, Discard this card: Draw a card.)

Isolated Chapel enters tapped unless you control a Plains or a Swamp.

: Add or .

If a creature attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

: Add one mana of any color. Spend this mana only to cast a Dinosaur spell or activate an ability of a Dinosaur source.