Mutant Munition Thief

Sacrifice up to 3 Artifacts: Mutant Munition Thief gets +1/+1 for the converted mana cost of the artifacts sacrificed, maximum 7.
If Mutant Munition Thief's power is greater then 10 it gains Vigilance
If Mutant Munition Thief's toughness is greater then 10 is gains Reach