Inspiration

Intruder Alarm

Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

Invisibility

Enchant creature
Enchanted creature can't be blocked except by Walls.

Mahamoti Djinn

Flying (This creature can't be blocked except by creatures with flying or reach.)

Mana Leak

Counter target spell unless its controller pays {3}.

Chastise

Destroy target attacking creature. You gain life equal to its power.

Merchant of Secrets

Merchant Scroll

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Mind Bend

Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another. (For example, you may change "nonblack creature" to "nongreen creature" or "forestwalk" to "islandwalk." This effect lasts indefinitely.)

Eighth Edition