Well, lets read that last line
More importantly, the creature card has a useful ability in that whenever it attacks or is targeted by an opponents spell, it can deal three damage to each opponent (making it potentially useful in multiplayer formats such as Commander) or exile (essentially remove from the game, in Magic: The Gatherings lingo) the top two cards of the players deck - the player then picks one of those two cards, which they can choose to play until the end of their next turn
Stitch in Time breaks that mold, but I still think its the best option for coin flip cards
In Urza's Legacy , we made a green Aura that boosted a creature's power and gave it trample
With access to green mana, you get a great package of ramp spells and creatures like Birds of Paradise, Gilded Goose, and Farseek, which are considerably better than most typical preconstructed decks