Tatters, Terrifying Imitator

{1}{b}: Tatters gains all activated abilities of target creature card in a graveyard until end of turn. Activate only if there are three or more creature
cards in your graveyard.
When Tatters dies, you may pay {2}{b}{b} and exile
it. If you do, search your library for a monoblack
legendary Scarecrow card with a different name,
and put it onto the battlefield. Then, shuffle.