Eocarcinus, Forge Crab

{r}{u}{g}, {t}: Add 1 Random card your own from outside the game to your Hand. You may cast it without paying its Mana Cost.
{x}{w}{w}{w}: Counter target Spell with CMC X. Untap Eocarcinus, Forge Crab. It gains the Keywords and Abilities of the countered Spell.
Eocarcinus, Forge Crab's power is equal to the amount of times it has activated a Mana Ability.