msem-instigator

As an additional cost to cast this spell, discard a card.
Draw two cards and create a Treasure token.

Menace
Whenever Dragon's Twisted Shadow attacks and isn't blocked, it gets +4/+0 until end of turn.

Trample
Art of war — At the beginning of your end step, if Dragon's Wake dealt damage to an opponent this turn, gain control of target land for as long as Dragon's Wake remains on the battlefield.
Tap three untapped creatures you control: Dragon's Wake becomes an artifact creature until end of turn.

Dragon's Wrath deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller.

When Dragon-Forged Armor enters, exile a creature card from a graveyard.
Equipped creature gets +X/+Y, where X is the power of the last creature card exiled with Dragon-Forged Armor and Y is its toughness.
Equip {2}

Creature tokens you control get +1/+0.

This spell can't be countered.
For each spell you've cast this turn, search your library for a Dragon permanent card and put it onto the battlefield. Then shuffle.

Equipped creature gets +2/+0.
Equipped creature has first strike as long as it's attacking.
Equip {3}

Create a 4/4 red Dragon creature token with flying. Then that token deals 4 damage to each other creature and each opponent.

{2}: Dragonfire Longboat gets +1/+0 until end of turn.
Crew 1 (Tap any number of creatures you control with total power 1 or greater: This Ship Vehicle becomes an artifact creature until end of turn.)

Haste
{T}: Dragonfire Sniper deals 1 damage to target creature or planeswalker and 1 damage to that permanent's controller.

{T}: Add {C}.
{T}: Target land you control becomes the basic land type of your choice until end of turn.

Whenever an artifact you control is put into a graveyard from the battlefield, create a 4/4 red Dragon creature token with flying.

Harmony — Add one mana of any color.
{1}, {T}: Harmonize. Then sacrifice Dragonglass Harp. (To harmonize, trigger up to one harmony of a permanent you control.)
When Dragonglass Harp is put into a graveyard from the battlefield, draw a card.

When Dragonheart Seer dies, you may exile it. If you do, return up to two target instant and/or sorcery cards from your graveyard to your hand.

Each creature card you own that isn't on the battlefield has madness. The madness cost is equal to its mana cost. (If you discard a card with madness, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{T}, Discard a card: Dragonlord's Shrine deals 2 damage to any target.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
Dragonmaw Wurm enters with X +1/+1 counters on it.
{1}{G}, {T}: Target creature you control fights another target creature.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{3}{R}: When target creature dies this turn, create a 2/2 red Dragon creature token with flying and “{R}: This creature gets +1/+0 until end of turn.”

Defender
A deck can have any number of cards named Dragonwall Fragment.
At the beginning of your upkeep, if you control twenty or more creatures named Dragonwall Fragment, you win the game.

{T}: Add {C}.
Tap an untapped creature you control: Dragonwall Gates becomes a 0/4 Wall artifact creature with defender until end of turn. It's still a land.

Flash
When Dragonwall Samurai enters, prevent all combat damage target creature would deal this turn.

Flying
Dragonwrought Engineer gets +1/+1 for each artifact and enchantment you control.

{T}: Add {C}.
{T}, Reappropriate: Add {G} or {U}. (Exile exactly two cards from your hand and/or graveyard.)

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Drake Youngling enters, draw a card.

Flying
Ride {3}{U} ({3}{U}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)