Katsumasa, The Commentary

: Whenever a non-creature artifact you control becomes a creature, put a loyalty counter on Katsumasa
0: Target non-creature artifact you control becomes a creature with base power and toughness 4/4 until end of turn
-4: You get an emblem with "Artifact Creatures you control gets +2/+2" and "the crewing cost of vehicles you control costs 1 less"