Artefato — Equipamento
A criatura equipada recebe +2/+2.
Toda vez que uma criatura que sofreu dano causado pela criatura equipada for colocada num cemitério, devolva aquele card para o jogo sob seu controle. Anexe Foice do Sevo àquela criatura.
Equipar

The Scythe's ability triggers even if something other than the damage dealt by the equipped creature causes the creature to be put into a graveyard that turn.
If the card isn't a creature when it comes back onto the battlefield, then Scythe of the Wretched won't move onto it.
Scythe of the Wretched needs to equip your creature when the other creature goes to the graveyard for the ability to trigger, but it doesn't matter whether the Scythe equipped your creature when the damage was actually dealt.