Urza, hamster of artifice

artifacts you control are Powerstone in addition to their other types and have"{t}add{c} this mana can't be spent to cast non-artifact spells.
at beginning of your upkeep create a 1/2 robot hamster artifact creature token.
Tap 5 untapped robot hamsters you control: create a 0/0 construct artifact creature token with "this creature gets +!/+1 for each artifact you control"
Hexproof

"TAWNOS YOU FOOL"