Enchant creature
Enchanted creature gets +3/-3.

When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

, , Sacrifice this creature: Target creature gets +5/+5 and gains trample until end of turn.

When this creature enters, target creature gets +2/+0 and gains haste until end of turn.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
As long as you have the city's blessing, Detectives you control can't be blocked.
Whenever you draw your second card each turn, create a 2/2 white and blue Detective creature token.

Whenever you crank this Contraption, target creature gets -1/-1 until end of turn.

Flying
Flurry — Whenever you cast your second spell each turn, create a 1/1 white Bird creature token with flying.

This creature gets +1/+1 for each enchantment on the battlefield.

When this enchantment enters, create a 1/1 red Soldier creature token with haste.
Whenever you cast a spell that targets only a single creature you control, create a 1/1 red Soldier creature token with haste, then copy that spell. The copy targets that token.

, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

As this land enters, choose a creature type.
: Add .
: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Ward , haste
Opus — Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn. If five or more mana was spent to cast that spell, create a token that's a copy of this creature.

Put a +1/+1 counter on target creature you control. It gains vigilance until end of turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

: Add .
, , Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Menace (This creature can't be blocked except by two or more creatures.)
Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
When this creature is turned face up, exile the top card of your library. Until end of turn, you may play that card.

Return target permanent to its owner's hand.

Draw three cards.

Raid — When this creature enters, if you attacked this turn, this creature deals 2 damage to any target.

As this land enters, choose a creature type.
: Add .
: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature source of the chosen type.