Orochimaru

When Orochimaru enters the battlefield, destroy target creature. You may have Orochimaru
become a copy of target creature that's died this
turn. When you cast your first instant or sorcery
every turn and when Orochimaru goes into
comabt, you may put a +1/+1 counter on target opponent's creature, goad that creature. At the beginning of your opponent's next endstep, they sacrifice the goaded creature. That creature
returns to the battlefield under your control.