Mishra's Self-Replicator
{5}
Artifact Creature -- Assembly-Worker
2/2
Whenever you cast a historic spell, you may pay {1}. If you do, create a token that's a copy of ~this~. (Artifacts, legendaries, and Sagas are historic.)
Sorcerer's Broom
{2}
Artifact Creature -- Spirit
2/1
Whenever you sacrifice another permanent, you may pay {3}. If you do, create a token that's a copy of ~this~.