Vendula, Lazav's Acquisitor

Haste, Skulk
Whenever you cast an instant or sorcery spell you
don't own or a permanent you don't own enters
the battlefield under your control, create a
Treasure token.
Whenever Vendula deals combat damage to a
player, exile the top card of that player's library.
For as long as that card remains exiled, you may
cast it.