Target creature gets +1/+0 until end of turn. When that creature dies this turn, create a 3/2 colorless Eldrazi Horror creature token.

Create a 1/1 blue and red Otter creature token with prowess. If this spell was cast from anywhere other than your hand, put a +1/+1 counter on that creature. (Whenever you cast a noncreature spell, a creature with prowess gets +1/+1 until end of turn.)

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

, Sacrifice Ouphe Vandals: Counter target activated ability from an artifact source and destroy that artifact if it's on the battlefield. (Mana abilities can't be targeted.)

Put target creature into its owner's library second from the top. Its controller gains 3 life.

This spell costs less to cast if it targets a creature spell.

Counter target spell.

At the beginning of your upkeep, put two eon counters on Out of the Tombs, then mill cards equal to the number of eon counters on it.

If you would draw a card while your library has no cards in it, instead return a creature card from your graveyard to the battlefield. If you can't, you lose the game.

When Out of Time enters, untap all creatures, then those creatures phase out until Out of Time leaves the battlefield. Put a time counter on Out of Time for each creature that phased out this way.

Vanishing (At the beginning of your upkeep, remove a time counter from this enchantment. When the last is removed, sacrifice it.)

When Outcaster Greenblade enters, search your library for a basic land card or a Desert card, reveal it, put it into your hand, then shuffle.

Outcaster Greenblade gets +1/+1 for each Desert you control.

Outflank deals damage to target attacking or blocking creature equal to the number of creatures you control.

Renown 6 (When this creature deals combat damage to a player, if it isn't renowned, put six +1/+1 counters on it and it becomes renowned.)

Outland Colossus can't be blocked by more than one creature.

Lifelink

When Outlaw Medic dies, draw a card.

Creatures you control get +2/+0 until end of turn. If you control an outlaw, exile the top card of your library. Until the end of your next turn, you may play that card. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)

X target blocked creatures assign their combat damage this turn as though they weren't blocked.

Outnumber deals damage to target creature equal to the number of creatures you control.

Chroma — When Outrage Shaman enters, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

: The next 1 damage that would be dealt to Outrider en-Kor this turn is dealt to target creature you control instead.

Counter target spell that targets a player.

Trample, haste

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Choose one —

• Destroy target artifact or enchantment.

• Target creature you control explores, then it explores again. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard. Then repeat this process.)

Whenever a player taps a land for mana, that player adds one mana of any type that land produced, and Overabundance deals 1 damage to the player.

Each time target permanent would deal damage to a permanent or player this turn, it deals double that damage to that permanent or player instead.

Splice onto Arcane (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.)

Flash

Flying

Exploit (When this creature enters, you may sacrifice a creature.)

When Overcharged Amalgam exploits a creature, counter target spell, activated ability, or triggered ability.

Creatures you control get +2/+2 and gain trample until end of turn.

Enchant opponent

When Overencumbered enters, enchanted opponent creates a Clue token, a Food token, and a Junk token.

At the beginning of combat on enchanted opponent's turn, that player may pay for each artifact they control. If they don't, creatures can't attack this combat.

Target player draws seven cards.

Enrage — Whenever Overgrown Armasaur is dealt damage, create a 1/1 green Saproling creature token.

Sacrifice a land: You gain 3 life.

When Overgrown Pest enters, look at the top five cards of your library. You may reveal a land or double-faced card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order.

: Add one mana of any color.

: Add two mana of any one color. Spend this mana only to turn permanents face up.

When Overgrowth Elemental enters, put a +1/+1 counter on another target Elemental you control.

Whenever another creature you control dies, you gain 1 life. If that creature was an Elemental, put a +1/+1 counter on Overgrowth Elemental.

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

Destroy target artifact if its mana value is 2 or less. If this spell was kicked, destroy that artifact if its mana value is 5 or less instead.

Impending 5— (If you cast this spell for its impending cost, it enters with five time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Whenever Overlord of the Balemurk enters or attacks, mill four cards, then you may return a non-Avatar creature card or a planeswalker card from your graveyard to your hand.

Impending 4— (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Flying

Whenever Overlord of the Floodpits enters or attacks, draw two cards, then discard a card.

Impending 4— (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)

Whenever Overlord of the Mistmoors enters or attacks, create two 2/1 white Insect creature tokens with flying.

Freerunning (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)

Untap all creatures you control that attacked this turn. If it's your main phase, there is an additional combat phase after this phase, followed by an additional main phase.

Counter target spell unless its controller pays for each artifact you control.

Creatures you control get +3/+3 and gain trample until end of turn.

First Contact — Whenever Overseer of Vault 76 or another creature you control with power 3 or less enters, put a quest counter on Overseer of Vault 76.

At the beginning of combat on your turn, you may remove three quest counters from among permanents you control. When you do, put a +1/+1 counter on each creature you control and they gain vigilance until end of turn.

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

Menace

Whenever Overt Operative deals combat damage to a player, it assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Creatures you control get +3/+3 until end of turn.

When Overwhelmed Archivist enters, draw a card, then discard a card.

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Creatures you control gain vigilance and trample until end of turn. Roll a d20.

1–9 | Creatures you control get +2/+2 until end of turn.

10–19 | Put two +1/+1 counters on each creature you control.

20 | Put four +1/+1 counters on each creature you control.

Whenever you attack with three or more creatures, draw a card.

This spell costs less to cast for each creature card in your graveyard.

Exile target creature or planeswalker.

Until end of turn, creatures you control gain trample and get +X/+X, where X is the greatest power among creatures you control.

Flying

Ward—, Pay 3 life.

Whenever you cast a noncreature spell, create X 1/1 red Phyrexian Goblin creature tokens, where X is the mana value of that spell. They gain haste until end of turn.

When Ovinomancer enters, sacrifice it unless you return three basic lands you control to their owner's hand.

, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Whenever a creature deals damage to a player, that player may say "Ow" once for each permanent named Ow. If the player doesn't, Ow deals 1 damage to them.

Flying

When Owl Familiar enters, draw a card, then discard a card.