Each crystal is assigned a specific Magic mana color: The Earth Crystal - green The Fire Crystal - red The Water Crystal - blue The Wind Crystal - white While each crystal results in a -1 decrease to spell-casting cost, one has its own unique effects and costs associated with playing them, as can be seen in the cards above
Arbok and Alakazam get Full Art ex cards in Pokmon Card 151
Let me know on Twitter what you think of the Boros precon
With the ability to create a swarm of little nippers, then pump them up each time he attacks, Edgar naturally works best in a horde-style deck that can swiftly overwhelm opponents
I just think it's odd there's not a bunch of like "Peter Parker, Student" cards that cost 1 mana and then you draw and discard, or they tap to draw and discard a card, something like that, that you want to pop back into your hand
It's important to stack the triggers so that the Goblin Cannon doesn't sacrifice until you have pumped enough damage into it