Judas, the Betrayer

When Judas, the Betrayer enters the battlefield,
go to the next floor; then put a +1/+1 counter on another target creature you control.
When Judas, the Betrayer dies, you may remove a
+1/+1 counter from another creature you control, instead. If you do, Judas, the Betrayer gets a
+1/+1 counter and is a Demon in addition to its
other types. Exile Judas, the Betrayer any time it
would leave the battlefield.