msem-instigator

You may cast this spell as though it had flash if you control a Dragon or spend an additional {2} to cast it.
Draw three cards.

Equipped creature gets +2/+0 and is a Dragon in addition to its other types.
Equip {1}

Target creature gets +2/+0 and gains first strike until end of turn. If it's a Dragon, put a +1/+1 counter on it.

Creature tokens you control get +1/+0.

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

Target creature gets +1/+3 and gains hexproof until end of turn. (Then exile this card. You may cast the creature later from exile.)

Target creature gets -2/-1 until end of turn. When it dies this turn, its controller loses 5 life.

Flash
If an opponent would draw one or more cards except during their draw step, instead they draw a card and you create that many 1/1 white Bird creature tokens with flying.

Whenever a spell or ability causes an opponent to draw a card, draw a card unless that player pays 1 life.

Choose one or all—
• Dreamfire deals X damage to target creature.
• Dreamfire deals X damage to each player.
• Target creature gets +X/+0 until end of turn.

Protection from Spirits
At the beginning of each end step, if a card was put into exile or a graveyard from anywhere this turn, draw a card.

Flash
When Dreamnapper enters the battlefield, another target creature phases out until Dreamnapper leaves the battlefield. (Treat it and anything attached to it as though they don't exist as long as it's phased out.)

Scry 1, then draw two cards. You gain 3 life. Exile up to four cards from graveyards.

({T}: Add {W} or {B}.)
Dreary Township enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

Choose one—
• Create two 1/1 black Worm creature tokens.
• Put up to two target cards from your graveyard on top or bottom of your library.

When Drifting Warden enters the battlefield, exile another target creature until Drifting Warden leaves the battlefield.
{3}{W}: Exile Drifting Warden. Return it to the battlefield under its owner's control at the beginning of the end step.

Gain control of target creature until end of turn. Untap it. It gets +2/+0 and gains haste until end of turn.

Menace, haste
Other Centaurs you control get +1/+0.

When Drop Bear enters the battlefield, return another target permanent that isn't a land an opponent controls or a card in a graveyard to its owner's hand.

Target player draws a card for each card in their graveyard.

Drown deals 2 damage to target creature. That creature can't block this turn.

{U}, Sacrifice a creature: Discard a card, then draw a card.

Whenever you cast a blue spell, you may cast creature spells this turn as though they had flash.
Whenever you cast a black spell, put up to one target card from your graveyard on top of your library.

Enchant creature
Enchanted creature has +2/+0 and has haste.
Quickdraw {R} (When a creature you control blocks or becomes blocked, you may cast this spell for {R}.)

Whenever Duela Alchemist becomes tapped, catalyze. (The next spell you cast this turn costs {1} less to cast.)
{1}{U}, {T}: Untap another target artifact or creature.