Flying

Olivia's Bloodsworn can't block.

: Target Vampire gains haste until end of turn.

: Add . Spend this mana only to activate abilities.

: Add .

, , Exile Ominous Cemetery: Target creature's owner shuffles it into their library.

Whenever you draw a card, put a foreshadow counter on Ominous Seas.

Remove eight foreshadow counters from Ominous Seas: Create an 8/8 blue Kraken creature token.

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

Enchant creature

Enchanted creature is legendary, gets +1/+1, and has flying, vigilance, and lifelink.

Return target card from your graveyard to your hand. Put up to one other target card from your graveyard on top of your library. Exile Once and Future.

Adamant — If at least three green mana was spent to cast this spell, instead return those cards to your hand and exile Once and Future.

Whenever a creature attacks this turn, it gains lifelink until end of turn.

Awaken 4— (If you cast this spell for , also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

At the beginning of the upkeep of enchanted creature's controller, that player loses 1 life.

Enchant creature or enchantment

Enchanted permanent is an enchantment and loses all other card types. (It still has its abilities, but it's no longer a creature.)

Whenever one or more creatures you control deal combat damage to a player, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

, Exile a creature card from your graveyard: Investigate. You gain 2 life.

Enchant creature

At the beginning of your upkeep, sacrifice a creature.

Enchanted creature gets +3/+3 and has trample.

Enchanted creature is a Demon Spirit.

When Onulet dies, you gain 2 life.

: Target creature you control gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Flying

Each other Rogue creature you control enters with an additional +1/+1 counter on it.

Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, that player discards a card.

All Slivers have "Whenever this permanent becomes the target of a spell an opponent controls, you may draw a card."

Search your library for an Aura or Equipment card, reveal it, put it into your hand, then shuffle.

Target player draws four cards.

Whenever you crank Optical Optimizer, until end of turn, target creature becomes an artifact in addition to its other types and gains ": Draw a card."

Opulent Palace enters tapped.

: Add , , or .

Enchant creature

Enchanted creature has ": Scry 1, then draw a card." (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Reach (This creature can block creatures with flying.)

Whenever you cast a Spirit or Arcane spell, Orbweaver Kumo gains forestwalk until end of turn. (It can't be blocked as long as defending player controls a Forest.)

Whenever another creature you control enters, target creature an opponent controls gets -1/-1 until end of turn.

: Orcish Artillery deals 2 damage to any target and 3 damage to you.

: Flip a coin. If you win the flip, target Orc creature gets +2/+0 until end of turn. If you lose the flip, it gets -0/-2 until end of turn.

, Sacrifice an artifact: Orcish Mechanics deals 2 damage to any target.

Attacking creatures you control get +1/+0.

, Sacrifice an artifact: Orcish Vandal deals 2 damage to any target.

Enchant creature

Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Heliod.

When you sacrifice Ordeal of Heliod, you gain 10 life.

Enchant creature

Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Purphoros.

When you sacrifice Ordeal of Purphoros, it deals 3 damage to any target.

Exile target attacking creature.

Defender (This creature can't attack.)

As Order of the Stars enters, choose a color.

Order of the Stars has protection from the chosen color.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Whenever Order of Yawgmoth deals damage to a player, that player discards a card.

Orderly Plaza enters tapped.

: Add or .

Battalion — Whenever Ordruun Veteran and at least two other creatures attack, Ordruun Veteran gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

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

Flying, haste

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

I — Origin of the Hidden Ones deals 4 damage to any target.

II — Create two 1/1 black Assassin creature tokens with menace.

III — Whenever an Assassin you control attacks this turn, create a 1/1 black Assassin creature token with menace that's tapped and attacking.

Flying

Tribute 2 (As this creature enters, an opponent of your choice may put two +1/+1 counters on it.)

When Ornitharch enters, if tribute wasn't paid, create two 1/1 white Bird creature tokens with flying.

, : Create a 1/1 green Snake creature token. If you control ten or more creatures, flip Orochi Eggwatcher.

Whenever Orphans of the Wheat attacks, tap any number of untapped creatures you control. Orphans of the Wheat gets +1/+1 until end of turn for each creature tapped this way.

Orzhov Basilica enters tapped.

When Orzhov Basilica enters, return a land you control to its owner's hand.

: Add .

Deathtouch

Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

: Add or .

: Orzhov Keyrune becomes a 1/4 white and black Thrull artifact creature with lifelink until end of turn.

Whenever Orzhov Racketeers deals combat damage to a player, that player discards a card.

Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

: Add .

, : Target player loses 1 life and you gain 1 life.

Lifelink

Delirium — At the beginning of your end step, if there are four or more card types among cards in your graveyard, each opponent may sacrifice a nonland permanent or discard a card. Then Osseous Sticktwister deals damage equal to its power to each opponent who didn't sacrifice a permanent or discard a card this way.

Dinosaur spells you cast cost less to cast.

: Target Dinosaur gains haste until end of turn.

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.)

Assist (Another player can pay up to of this spell's cost.)

Counter target spell.

You may discard a Swamp card rather than pay this spell's mana cost.

Choose a creature type. All creatures of that type get -1/-1 until end of turn.