For example, if Narod, the Beige Flower and Doran, the Siege Tower ("Each creature assigns combat damage equal to its toughness rather than its power") are both on the battlefield, each time a creature would deal combat damage, that creature's controller chooses whether it assigns combat damage equal to its mana value or its toughness
Unter der Herrschaft der Sen Triplets gibt es keinen freien Willen nur dein Verstand zhlt
You get a 3/2 that can block , mind you, and when it dies, you can cast the adventure again, draw a card by paying 1 life, and be ready to cast the creature again
Combined with cards that can peek at your deck it could be very powerful
Bronzebeak Foragers and Trapjaw Tyrant are dinosaurs that have temporary removal (Bronzebeak Foragers exiling nonland permanents on ETB and Trapjaw Tyrant exiling creatures on Enrage trigger) until they leave the battlefield
There are two books, one for Sets 1-4 and another for Sets 5-8