You wont get wildcards in the packs and opening them doesnt count towards the wildcard Track
Earthbending works really well in a landfall strategy because the earthbended land returns to the battlefield when its destroyed or sacrificed
Although the Ally token created by the triggered ability is attacking, it was never declared as an attacking creature (for the purposes of abilities that trigger whenever a creature attacks, for example)
And the cherry on top is that anything they sacrifice, you get (Tergrid, God of Fright style) unless they pay three life
Its not quite as powerful as The One Ring, but in the right deck, it can do just as much work
He renamed the plane Mirrodin, began filling it with kidnapped life forms from other planes, and performed terrible experiments on them in his obsessive quest for a Planeswalker's spark