Search target opponent's library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles.

You may exile two green cards from your hand rather than pay this spell's mana cost.

Allosaurus Rider's power and toughness are each equal to 1 plus the number of lands you control.

Shroud (This creature can't be the target of spells or abilities.)

Whenever you cast an enchantment spell, draw a card.

Whenever Avenging Druid deals damage to an opponent, you may reveal cards from the top of your library until you reveal a land card. If you do, put that card onto the battlefield and put all other cards revealed this way into your graveyard.

Threshold — Put three cards from your graveyard on the bottom of your library: Battlefield Scrounger gets +3/+3 until end of turn. Activate only once each turn and only if seven or more cards are in your graveyard.

When the names of three or more nonland permanents begin with the same letter, sacrifice Bloodletter. If you do, it deals 2 damage to each creature and each player.

Whenever a player casts a black spell, Bog Gnarr gets +2/+2 until end of turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature of their choice.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Call to the Grave.

Flying

When Cavern Harpy enters, return a blue or black creature you control to its owner's hand.

Pay 1 life: Return Cavern Harpy to its owner's hand.

Charging Rhino can't be blocked by more than one creature.

Equipped creature gets +2/+0 and has shroud. (It can't be the target of spells or abilities.)

Whenever a Rogue creature enters, you may attach Cloak and Dagger to it.

Equip

Flying

When Cloudchaser Kestrel enters, destroy target enchantment.

: Target permanent becomes white until end of turn.

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Crater Hellion enters, it deals 4 damage to each other creature.

At the beginning of your upkeep, destroy target nonland permanent with the lowest mana value. (If two or more permanents are tied for lowest, target any one of them.)

Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. <I>(This effect lasts indefinitely.)</I>

: Return Deadhead from your graveyard to the battlefield. Activate only if an opponent isn't touching their hand (of cards).

As long as you have seven or more cards in hand, Deathmask Nezumi gets +2/+1 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Search your library for a multicolored card, reveal it, put it into your hand, then shuffle.

: Target permanent you control gains protection from white until end of turn.

: Target spell or permanent becomes white until end of turn.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Players skip their upkeep steps.

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Haste

: Flowstone Hellion gets +1/-1 until end of turn.

Beasts can't block.

Whenever a player casts a blue spell, Glade Gnarr gets +2/+2 until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)

At the beginning of your upkeep, sacrifice a permanent.

Whenever Greater Harvester deals combat damage to a player, that player sacrifices two permanents of their choice.

Protection from blue

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

When an opponent casts an enchantment spell, if Hidden Ancients is an enchantment, Hidden Ancients becomes a 5/5 Treefolk creature.

Bloodthirst X (This creature enters with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)

Menace

Enrage — Whenever Indoraptor, the Perfect Hybrid is dealt damage, choose an opponent at random. Indoraptor deals damage equal to its power to that player unless they sacrifice a nontoken creature of their choice.

Whenever Jareth, Leonine Titan blocks, it gets +7/+7 until end of turn.

: Jareth gains protection from the color of your choice until end of turn.

Sacrifice Kami of False Hope: Prevent all combat damage that would be dealt this turn.

Karn, Legacy Reforged'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.

: Kindlespark Duo deals 1 damage to target opponent.

Whenever you cast a noncreature spell, untap Kindlespark Duo.

Choose a land type. Exile all lands you control of that type. Drop those cards, one at a time, onto the playing area from a height of at least one foot. Destroy each permanent completely covered by those cards. Then return the cards you dropped to the battlefield tapped.

At the beginning of your upkeep, you may put a treasure counter on Legacy's Allure.

Sacrifice Legacy's Allure: Gain control of target creature with power less than or equal to the number of treasure counters on Legacy's Allure. <I>(This effect lasts indefinitely.)</I>

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When Lockjaw Snapper dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.

When a creature is put into an opponent's graveyard from the battlefield, if Lurking Skirge is an enchantment, Lurking Skirge becomes a 3/2 Phyrexian Imp creature with flying.

Flying

, Sacrifice Major Teroh: Exile all black creatures.

Protection from white

Marauding Knight gets +1/+1 for each Plains your opponents control.

If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost.

Each player exiles two cards from their hand.

: Add .

, : Put a storage counter on Molten Slagheap.

, Remove X storage counters from Molten Slagheap: Add X mana in any combination of and/or .

When Monk Realist enters, destroy target enchantment.

Shroud (This creature can't be the target of spells or abilities.)

Multani, Maro-Sorcerer's power and toughness are each equal to the total number of cards in all players' hands.

Flying

Creatures you control have "Whenever this creature becomes the target of a spell or ability, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand. This ability triggers only twice each turn."

When Nantuko Shaman enters, if you control no tapped lands, draw a card.

Suspend 1— (Rather than cast this card from your hand, you may pay and exile it with a time counter on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

Neurok Spy can't be blocked as long as defending player controls an artifact.