Mechanical Monsters: Mechanics

Spares: Damage that does not kill this creature is not dealt to it. When this creature dies, create a 0/0 colorless scrapyard artifact token with Sacrifice this artifact. Return an artifact card with CMC of x or less to your hand, where X is the number of scrapyard tokens you control. Used on 1 cards: Assault Automaton

Upgrade: You may pay PARAM1 mana.if you do transform this. Used on 0 cards:

In card text or details pages, write the mechanic's code name (playtest name) between square brackets, like "[Crittercast]", "[Bushido 1]" or "[Delay 4 {2}{R}{R}]". It will be expanded to the mechanic's name plus reminder text, such as "Suspend 4 – {2} {r} {r} . (Rather than cast this spell from your hand,...)"
To expand a mechanic's name but not its reminder text, include parentheses at the end of the square brackets: "[Crittercast()]", "[Delay 9 {R}()]".