Cogwork Assembler
{3}
Artifact Creature -- Assembly-Worker
2/3
{7}: Create a token that's a copy of target artifact. That token gains haste. Exile it at the beginning of the next end step.
Echo Storm
{3}{U}{U}
Sorcery
When you cast ~this~, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies.
Create a token that's a copy of target artifact.