Magnus, Shipwrecked Changeling

When Magnus, Shipwrecked Changeling enters
the battlefield or at the beginning of your upkeep
copy target Artifact, sacrifice the copy at the end
of your turn.
{3}{r} Arfin Mark XXV:
create a 5/3 Legendary Token Creature with haste
named Arfin. Sacrifice it at the end of your turn
"Okay THIS time it should work!"
-Magnus (moments before disaster)