Each creature assigns combat damage equal to its toughness rather than its power.

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has toughness 6 or greater, transform Dormant Grove.

Dormant Volcano enters tapped.

When Dormant Volcano enters, sacrifice it unless you return an untapped Mountain you control to its owner's hand.

: Add .

Enchant creature

Enchanted creature has "Whenever this creature attacks, create a 4/4 white Spirit creature token with flying that's tapped and attacking. Sacrifice that token at end of combat."

If Dorothea's Retribution would be put into a graveyard from anywhere, exile it instead.

You gain 6 life.

Draw a card.

Choose another player. Look at that player's hand and choose a card other than a basic land card from it. They discard that card. At the beginning of the first upkeep in your next game with that player, look at that player's hand and choose a card other than a basic land card from it. They discard that card.

Choose another player. You gain 5 life. At the beginning of the first upkeep in your next game with that player, you gain 5 life.

Flying

When Double Header enters, you may return target permanent with a two-word name to its owner's hand.

Counter up to two target spells.

Choose another player. You draw two cards. At the beginning of the first upkeep in your next game with that player, you draw two cards.

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

, : Double the amount of each type of unspent mana you have.

Doubtless One's power and toughness are each equal to the number of Clerics on the battlefield.

Whenever Doubtless One deals damage, you gain that much life.

: Counter target red spell.

+1: Until your next turn, up to one target creature gets -3/-0 and its activated abilities can't be activated.

−1: You gain 2 life and draw a card.

−7: You get an emblem with "Your opponents can't untap more than two permanents during their untap steps."

+1: Until end of turn, whenever a creature you control deals combat damage to a player, put a loyalty counter on Dovin, Grand Arbiter.

−1: Create a 1/1 colorless Thopter artifact creature token with flying. You gain 1 life.

−7: Look at the top ten cards of your library. Put three of them into your hand and the rest on the bottom of your library in a random order.

When Dovin's Acuity enters, you gain 2 life and draw a card.

Whenever you cast an instant spell during your main phase, you may return Dovin's Acuity to its owner's hand.

Put up to one target tapped creature on top of its owner's library. You may search your library and/or graveyard for a card named Dovin, Architect of Law, reveal it, and put it into your hand. If you search your library this way, shuffle.

Target player discards two cards.

Fuse (You may cast one or both halves of this card from your hand.)

: Target creature loses flying until end of turn.

Sacrifice Downdraft: It deals 2 damage to each creature with flying.

Tap up to three target creatures.

Flash

When Downwind Ambusher enters, choose one —

• Target creature an opponent controls gets -1/-1 until end of turn.

• Destroy target creature an opponent controls that was dealt damage this turn.

Whenever Dowsing Device or another artifact you control enters, up to one target creature you control gets +1/+0 and gains haste until end of turn. Then transform Dowsing Device if you control four or more artifacts.

Dr. Julius Jumblemorph is every creature type (even if this card isn't on the battlefield).

Whenever a host you control enters, you may search your library and/or graveyard for a card with augment and combine it with that host. If you search your library this way, shuffle.

Echo of the First Murder — When Drach'Nyen enters, exile up to one target creature.

Daemon Sword — Equipped creature has menace and gets +X/+0, where X is the exiled card's power.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

, , Discard a card at random: Regenerate target creature.

Enchant creature

Enchanted creature gets +1/+1 and has flying, haste, and ": This creature gets +1/+0 until end of turn." It's a Dragon in addition to its other types.

When enchanted creature dies, return Draconic Destiny to its owner's hand.

As an additional cost to cast this spell, exile an instant or sorcery card from your graveyard.

Draconic Intervention deals X damage to each non-Dragon creature, where X is the exiled card's mana value. If a creature dealt damage this way would die this turn, exile it instead.

Exile Draconic Intervention.

When Draconic Muralists dies, you may search your library for a Dragon card, reveal it, put it into your hand, then shuffle.

Flying

As Dracoplasm enters, sacrifice any number of creatures. Dracoplasm's power becomes the total power of those creatures and its toughness becomes their total toughness.

: Dracoplasm gets +1/+0 until end of turn.

Put any number of target artifact cards from target player's graveyard on top of their library in any order.

Create a 2/2 white and blue Detective creature token. If a creature died this turn, you gain 2 life, surveil 2, then investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Delirium — This spell costs less to cast as long as there are four or more card types among cards in your graveyard.

Destroy target nonland permanent.

Return target creature to its owner's hand.

Draw a card.

, : You may put a multicolored creature card from your hand onto the battlefield.

, : Put a +1/+1 counter on target creature.

Flying

At the beginning of each upkeep, create a 1/1 red and green Dragon creature token with flying and devour 2. (As the token enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)

Defender

When Dragon Egg dies, create a 2/2 red Dragon creature token with flying and ": This creature gets +1/+0 until end of turn."

Enchant creature

Enchanted creature gets +1/+1 and has trample.

When a creature with mana value 6 or greater enters, you may return Dragon Fangs from your graveyard to the battlefield attached to that creature.

Ferocious — If you control a creature with power 4 or greater, you may cast Dragon Grip as though it had flash. (You may cast it any time you could cast an instant.)

Enchant creature

Enchanted creature gets +2/+0 and has first strike.

Protection from Dragons

Dragon Hunter can block Dragons as though it had reach.

Enchant creature

When Dragon Mantle enters, draw a card.

Enchanted creature has ": This creature gets +1/+0 until end of turn."

: Create a 5/5 red Dragon creature token with flying. (It can't be blocked except by creatures with flying or reach.)

Enchant creature

Enchanted creature gets +1/+0 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

When a creature with mana value 6 or greater enters, you may return Dragon Shadow from your graveyard to the battlefield attached to that creature.

Equipped creature has defender and ", : Other creatures you control gain trample and get +X/+X until end of turn, where X is this creature's power."

Equip

Flash

Drag Below — When Dragon Turtle enters, tap it and up to one target creature an opponent controls. They don't untap during their controllers' next untap steps.

Flying

: Dragon Whelp gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Dragon Whelp at the beginning of the next end step.

Enchant creature

Enchanted creature has flying.

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

When a creature with mana value 6 or greater enters, you may return Dragon Wings from your graveyard to the battlefield attached to that creature.

: Dragonborn Immolator gets +1/+0 until end of turn.

Gift of Tiamat — When Dragonborn Immolator dies, note its power. You get a boon with "When you cast your next creature spell, it perpetually gets +X/+0, where X is the noted number."