If you had a cycle, one could give you impulse draw, another could grant the ability to look at and cast spells from the top of your deck, and a third could follow the Monster Manual self-mill/recur pattern
They usually look unofficial, with plain paper, office-printer layouts, black-and-white text, sometimes even handwritten notes, because they were never meant to be sold or packed into boosters
Should our opponent kill our early stuff to slow us down, Circle of Dreams Druid can still tap for at least one mana on its own, yet will provide us with extra just for casting some creatures before tapping it
This one is the idea of smashitude. Illustrated by Kev Walker Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
The clear target is Kathril, who then becomes a giant, face-smashing monster with any number of keyword abilities