When a creature with firebending X attacks, you add X red mana where X is equal to the creatures power
In Sultai colors, you can do some nasty things with this, from using Buried Alive/Entomb early on to setup a great later turn, to just replaying the Maha, Its Feathers Night and Toxrill, the Corrosive that your opponents worked so so hard to get rid of
Karn deals with everything
Its visual appeal, along with the prestige of having a Legendary Pokmon in the set, makes the Rayquaza V Alternate Full Art one of the most valuable and desirable cards in Evolving Skies
Only one Tool can be attached at a time, so it is important to understand which of your Tools will be most useful in a game
Where this card excels is the fact that it gives goblins haste and a nice bit of cost reduction