I was wondering if anyone knew of or had a breakdown of how much mana a given card should cost. Like a 1/1 flyer generally costs 2 mana. that leads me to think that the flying ability costs about 1 mana. But what about other abilities like trample, or lifelink etc. What is the standard cost for a given ability and how much should a given power/toughness cost? I want to eliminate bad inefficent cards from my decks.