Rocket Raccoon, Hi-Tech Thief

Whenever you cast an artifact spell, you may put
a +1/+1 counter on target creature you control.
Sacrifice an artifact: Target creature you control
gains ward X, where X is its salvage value (An artifact can be salvaged for 1 or for its converted
mana cost value).
At your upkeep, if you have a salvage value 5 or greater, you may transform Rocket Raccoon.