There are a variety of methods of doing this, as there are both a ton of insane creatures and the overwhelming potential of most sagas
Whats cool about this, other than that, is that everyone other player can do the same, and for every other player that does it, you get to do it again
The mechanic in question is referred to in Ramp;D as "curiosity." It allows you to draw a card whenever the creature with the ability deals combat damage
The last throwback I want to mention also happens to be the fourth most valuable card (pre-orders) in Tarkir: Dragonstorm
Pros: A very wide selection Very cool Pokemon Center exclusives Lots of other Pokemon products and TCG accessories Cons: Ive heard of shipping issues from Pokemon Center for very high demand products Not for purchasing singles #4 Amazon is decent for sealed products You can purchase Pokemon cards from Amazon
creatures that cause you to gain life when other creatures enter the battlefield