Scarecrow Sliver

All Slivers are Scarecrows in addition to their
other types.
Whenever a Scarecrow enters the battlefield
under your control, destroy target permanent.
Zeekus: Wow! Now that's a spooky Sliver!
Guy: I don't see a Sliver. I see a Jack O' --
Zeekus: It's a Sliver, dammit!
Guy: But... where?...
Zeekus: It's there! Trust me!